User talk:Wostr

Archived discussions: Archive 1 (25.03.2013 – 20.02.2018); Archive 2 (11.03.2018 – 18.12.2023)

Thanks for your fixes in 2,4-Nonadienal

Hi Wostr. Thank you for fixing the above mentioned item and the related isomers. I was confused about the fact that two of them had the same CAS-number and agreed upon merging, sorry for the mess we made. Now it has become clear, I will re-check the linked databases. Tinux (talk) 14:04, 25 March 2024 (UTC)[reply]

@Tinux: Hi, the best option to distinguish different structures is to check InChI/InChIKey, CAS numbers are often imported from external databases and may be incorrect. In these items, CAS number in one of these items should be deprecated, but I don't have access to CAS Registry, so I can't tell for which structures it should be deprecated. Wostr (talk) 17:11, 25 March 2024 (UTC)[reply]

Q81976205

Could you pls doublecheck if the Chemspider ID is right wich I have add... Tahnk you Calle Cool (talk) 09:06, 5 August 2024 (UTC)[reply]

@Calle Cool: it seems that CSID:7869432 belongs to Q27295567 (both stereocenter and double bond configuration are defined → S and E respectively), so I've changed this ID in Q81976205 to CSID:57523144 (here the double bond configuration remains undefined). Thanks, Wostr (talk) 09:12, 5 August 2024 (UTC)[reply]

Thank you for you update --Calle Cool (talk) 12:29, 5 August 2024 (UTC)[reply]

Could you pls also have a Look to Q129063631? - thank you --Calle Cool (talk) 07:52, 14 August 2024 (UTC)[reply]

@Calle Cool: based on the CAS entry I've added InChI/InChIKey and other statements. However, the same InChI/InChIKey has 14343-71-6 and for this reason [1] and [2] exist. I suspect that 71662-11-8 was meant to describe a mixture of stereoisomers with different amount of tartrate and 14343-71-6 was meant specifically for 1:1 ratio, but I don't have enough info to properly split this item into two separate items (one for a mixture and one for 1:1 ratio). Wostr (talk) 18:54, 16 August 2024 (UTC)[reply]

@Benff: Perhaps you Could somthing said to this?--Calle Cool (talk) 21:45, 16 August 2024 (UTC)[reply]

The German name Furaltadonhemi[(R,R)-tartrat] originates from the drug catalogue maintained by the German Federal Institute for Drugs and Medical Devices. There the molar ratio is given as 2:1 (in other words 1:0.5). Common Chemistry gives it as 1:x. --Benff (talk) 14:55, 17 August 2024 (UTC)[reply]

I can't find any record of 2:1 ratio in PubChem/ChemSpider or other similar databases... Wostr (talk) 21:04, 17 August 2024 (UTC)[reply]

Q128587536

Could you this also check? Perhaps you find more... --Calle Cool (talk) 12:29, 5 August 2024 (UTC)[reply]

@Calle Cool: not much, but I have to check to what extent it overlaps with nitrocellulose (Q143874). Wostr (talk) 12:38, 5 August 2024 (UTC)[reply]

Thank you very much. And one last request for today - could you take a look at Q128589505?--Calle Cool (talk) 12:58, 5 August 2024 (UTC)[reply]

@Calle Cool: I've found other items about these two types of nitrocellulose and they are now merged. I don't thnik that there are many database entries about specific cellulose nitrates (nitrocellulose is usually described collectively, including smokeless powder based on it; also Polish chemist Urbanski wrote a chapter on it in Chemistry and Technology of Explosives [3], but the information from there is best suited for Wikipedia, not WD). However, I'll try to find if I have any other data about specific types of nitrocellulose in my pdfs (but the speed of pdf search takes several hours on my computer) and in the coming days I'll try to sort out nitrocellulose (Q143874) and collodion (Q898735) as well. Wostr (talk) 13:49, 5 August 2024 (UTC)[reply]

Yes, the whole thing is an exciting topic. I'm also asking me if cellulose dinitrate (Q4161930) and Q1779465 can be combined. According to the German article, these are also synonyms... But I wanted to ask the de-Chemie editorial team about this because the German articles are not exactly precise on this...--Calle Cool (talk) 14:11, 5 August 2024 (UTC)[reply]

@Calle Cool: I don't speak German, so I can't really say for sure, but cellulose dinitrate (Q4161930) is not a type of polymer with an exact atomic composition (its nitrogen content vary) and the nitrogen content described in de:Kollodiumwolle suggests that these two concept may be synonymous. Wostr (talk) 14:19, 5 August 2024 (UTC)[reply]

PS I've found pl.wiki article about the same I think. I'm inclined to actually merge these two items, but to be sure it might be helpful to ask the Redaktion Chemie in de.wiki. Wostr (talk) 14:22, 5 August 2024 (UTC)[reply]

Done --Calle Cool (talk) 14:24, 5 August 2024 (UTC)[reply]

Q144917

In object ethylene-vinyl acetate (Q144917) we have now two Echa ID. In bos ECHA-ID You can find the CAS-Number 24937-78-8. But I think ID 100.133.085 is for Ethenyl acetate--ethene (1/1) (Q82878860) and ECHA have the wrong CAS-Number at his side... What do you think!? Calle Cool (talk) 07:51, 6 August 2024 (UTC)[reply]

Hmmm but for CAS 104912-80-3 Echa have ID 100.167.368... So it is perhaps right that ethylene-vinyl acetate (Q144917) have two ECHA-ID`S--Calle Cool (talk) 07:53, 6 August 2024 (UTC)[reply]

@Calle Cool: Q82878860 is not a valid entry and it should be cleaned up to match the CAS entry (it is some sort of EVA oxidized copolymer, but I'd need to check it more thoroughly and I'll try to clean this item up in the coming days). Regarding Q144917, I suppose that there are some differences between the two ECHA entries, but it's not the first time I see such a situation. As long as there are no more detailed information in the ECHA entries about the differences, these two ECHA IDs would probably need to remain in the same item. Wostr (talk) 17:47, 6 August 2024 (UTC)[reply]

Q82919099

Could it be that the CAS-Nr. have to change to 77350-58-4? SciFinder don´t find the Number 201058-08-4 -> So perhaps it was deleted... Have you sources to verryfy this? Calle Cool (talk) 10:59, 7 August 2024 (UTC)[reply]

Names for 77350-58-4 in Scifinder is

Benzenemethanol, 4-[(4-methylphenyl)methoxy]
4-[(4-Methylphenyl)methoxy]benzenemethanol (ACI)
4-(4-Methylbenzyloxy)benzyl alcohol
[4-[(4-Methylphenyl)methoxy]phenyl]methanol

--Calle Cool (talk) 13:05, 7 August 2024 (UTC)[reply]

AFAIK deprecated CAS numbers should also be present in the CAS Registry and 201058-08-4 seems to be a formally valid number, however, I have not had access to this service for many years now. There is no better source for CAS numbers than CAS services like SciFinder, so I'd consider this result (77350-58-4) as correct, however, due to the presence of the first CAS number in various sources, I would not remove it, but change the rank to deprecated, with a proper qualifier – something like that Q82919099#P231. There is also a possibility that 201058-08-4 refers to some polymeric form, prepolymer, resin etc.? But without any info about this CAS number from CAS Registry it is impossible to say for sure. Wostr (talk) 15:06, 7 August 2024 (UTC)[reply]

201058-08-4 is not in the CAS-Register (Clarified in a german discussion: de:Benutzer_Diskussion:Rjh#(4-((4-Methylbenzyl)oxy)phenyl)methanol)--Calle Cool (talk) 06:46, 8 August 2024 (UTC)[reply]

I think I understand this discussion and it seems that the present solution in WD (with 201058-08-4 deprecated and 77350-58-4 with a normal rank and SciFinder as a source) is optimal given the limited information we have. Perhaps someone in the future will have sources explaining where this CAS number comes from and why some sources provide it but CAS does not. Wostr (talk) 20:47, 8 August 2024 (UTC)[reply]

International non-proprietary drug names (INN) and wikidata labels

(RS)-furaltadone (Q27144914)(RS)-furaltadone hydrochloride (Q27256693)(RS)-furaltadone (R,R)-tartrate (Q27268387)(S)-duloxetine (Q411932)(S)-(−)-carbidopa (Q71133637)(S)-(−)-carbidopa monohydrate (Q414225); see talk pages there.
If stereo descriptors are obligatory for any systematic reasons, this is absolutely not a problem, as they could be prefixed to the corresponding systematic chemical names, as it is appropriate and correct and scientific practice. However, in connection with an international non-proprietary name (INN), as designated by WHO and in most cases defined as a specific geometric molecular arrangement, such descriptors – because not being part of the designated INN – are mostly not acceptable in a label. It is acceptable to list them in the aliases. You wrote “Other databases uses them as well”. However, for a pharmaceutical substance assigned an INN by WHO stereo descriptors usually do not appear in the labels in databases. Databases use INNs in combination with descriptors mainly if the respective substance has a different stereochemical structure than the WHO assigned substance and needs to be disambiguated from it − and not the other way around. So, to stick with your example, DL-carbidopa [4], however, not (S)-(−)-carbidopa [5]. (S)-(−)- is not a part of the designated name WHO has assigned to this entity. It is even misleading as it suggests there is a difference to ‘carbidopa’, especially since ‘carbidopa’ isn’t even mentioned at all in the wd item now. You also wrote “Since labels and aliases are not meant to be reused by other project” which is not tenable since other (external) databases of course do reference Wikipedia and consequently also the automatically connected WD items. You wrote “it’s not really a problem that a name is more detailed than needed” which is not true: such name is not “more detailed” but simply neither officially assigned nor commonly established. It violates Help:Label with regards to ‘reflect common usage’ and ‘disambiguation information’). I don’t think that your changes and reverts is a consensual approach. Kind regards --Benff (talk) 19:43, 18 August 2024 (UTC)[reply]

Q24629934 Tetraphosphorheptasulfid

Hi - Which Chemspider ID is the right one? At 23621421 is the Formular right but 23349338 look the molar mas more right... Calle Cool (talk) 19:13, 20 August 2024 (UTC)[reply]

@Calle Cool: I'd say that 452389. Both 23621421 and 23349338 have incorrect formula among other things – however, these two records were created for tetraphosphorus heptasulfide just as 452389, but some chemical databases have some duplicated records with incorrect data – for various reasons, I once tried to report some errors to them, but they answered that such records are valid from their point of view and serve some purpose. Wostr (talk) 19:27, 20 August 2024 (UTC)[reply]

I think that this discussion is resolved and can be archived. If you disagree, don't hesitate to replace this template with your comment. Thank you for check Calle Cool (talk) 20:15, 20 August 2024 (UTC)[reply]

Q82898011 Diphosphorus trisulfide

Is the mention ECHA-Card here right? Because the Formular at ECHA is H6P2S3 but Diphosphorus trisulfide have P2S3 or not? Calle Cool (talk) 07:03, 21 August 2024 (UTC)[reply]

@Calle Cool: I suppose it is correct, despite the wrong molecular formula. In the now defunct EINECS catalog it had the correct formula [6], maybe this 'H6P2S3' were imported from some external source or calculated in the wrong way. I wrote to ECHA about this, but for now I would leave this as a correct ID. Wostr (talk) 09:54, 21 August 2024 (UTC)[reply]

I'm curious to see if ECHA will correct it...--Calle Cool (talk) 10:16, 28 August 2024 (UTC)[reply]

@Calle Cool: ECHA corrected this today and now [7] has 'P2S3' as a formula. Wostr (talk) 14:56, 3 September 2024 (UTC)[reply]

That was quicker than I thought. But it's great that they react to such information.--Calle Cool (talk) 21:15, 8 September 2024 (UTC)[reply]

I think that this discussion is resolved and can be archived. If you disagree, don't hesitate to replace this template with your comment. Thx Calle Cool (talk) 21:16, 8 September 2024 (UTC)[reply]

Q129752086 + Q129752220 P4S7

Hello - do you find a few things to add here? Perhaps on Chemspider? You better in this than I... Calle Cool (talk) 10:16, 28 August 2024 (UTC)[reply]

@Calle Cool: I think I've found the correct entry for alpha form in PubChem. I'm not sure however if this COD entry refers exactly to the beta form (as I don't have access to [8]). Wostr (talk) 15:07, 28 August 2024 (UTC)[reply]

Ok - I ask in the gernman community perhaps there sombody have access... But by the way -> could you also check Q129752414 and Q129752338. Thank you verry much --Calle Cool (talk) 16:45, 28 August 2024 (UTC)[reply]

@Calle Cool: the existence of Q129752338 required to move some statements from the main Q24629934 to Q129752338. But right now I see that Nadir is adding new content, so I'll wait until it's done. Wostr (talk) 17:33, 28 August 2024 (UTC)[reply]

Ah NadirSH and you are in direct contact - that´s good... --Calle Cool (talk) 21:23, 28 August 2024 (UTC)[reply]

Tetraethylammoniumtetrathiomolybdat

Could you have a look at Q130262330 - thank you Calle Cool (talk) 21:22, 8 September 2024 (UTC)[reply]

@Calle Cool: I couldn't find much I'm afraid. Wostr (talk) 23:11, 8 September 2024 (UTC)[reply]

But a little bit more is better than nothing 😉 - thank you for checking. PS: You have changed SMILES, InChlKey and InChl -> The Firstversion cames from SciFinder (Kreuz Elf has access - If it is important....)--Calle Cool (talk) 06:47, 9 September 2024 (UTC)[reply]

Hello guys. The new SMILES wostr put in Q130262330 is a better representation of the real structure of the compound. SciFinder is not always the best in that regards, unfortunately. (I checked the structure through the special paste function of ChemDraw)--Kreuz Elf (talk) 09:08, 9 September 2024 (UTC)[reply]

@Calle Cool: Just like Kreuz Elf wrote above, the previous version wasn't in line with English '

bis(tetraethylammonium) tetrathiomolybdate' + German 'Bis(tetraethylammonium)tetrathiomolybdat' and would suggest 1:1 ratio not 2:1. Wostr (talk) 09:13, 9 September 2024 (UTC)[reply]

PS If it's indeed in SciFinder, then the better option is to leave it as deprecated – that would prevent automatic creation of a duplicate based on SciFinder in the future. Wostr (talk) 09:15, 9 September 2024 (UTC)[reply]

@Wostr you're right. please do so. 37.247.74.122 19:01, 9 September 2024 (UTC)[reply]

I think that this discussion is resolved and can be archived. If you disagree, don't hesitate to replace this template with your comment. thanks at both Calle Cool (talk) 18:53, 9 September 2024 (UTC)[reply]

Checkrequest about molybdenumtetrasulfide

Q82090821 (NSC22310) and Q130263719 Molybdäntetrasulfid -> if you have time 😀 Thank you in advance Calle Cool (talk) 07:07, 9 September 2024 (UTC)[reply]

@Calle Cool:, I'm not sure about Q130263719. This chemical composition seems improbable, I can't find anything about such structure. Maybe it should be MoS₄²⁻? I can't say which structure is under 12136-77-5 in CAS Registry, but for know I think that MoS₄ is a hypothetical entity and its existence in real life is rather unlikely (however, this does not prevent such a hypothetical structure from existing in WD if there are some external identifiers, such as CAS number). Wostr (talk) 18:41, 9 September 2024 (UTC)[reply]

There is also a discussion at the De-Wiki. Kreuz Elf is there also involved. --Calle Cool (talk) 18:48, 9 September 2024 (UTC)[reply]

it is a theoretical compound. 37.247.74.122 18:59, 9 September 2024 (UTC)[reply]

Nylon 66

Q7071155 Nylon 66 -> What did you mean which one is the right PubChem-Entry ([9])? And Have I taken in the right ChemSpider?--Calle Cool (talk) 07:49, 13 September 2024 (UTC)[reply]

And if Chemspider is right... Could we add C13H26N2O2 as Chemical formula? Or did you deliberately leave that out in your editing? --Calle Cool (talk) 07:51, 13 September 2024 (UTC)[reply]

hmm w:en:Nylon 66 said (C12H22N2O2)n is the right formula...--Calle Cool (talk) 07:54, 13 September 2024 (UTC)[reply]

@Calle Cool: as Nylon 66 is a polymer (mixture of macromolecules), there is no correct PubChem/ChemSpider entries – this is a result of the fact that for polymers it is currently not possible to generate the same kind of entries as for ordinary organic molecules. InChI for macromolecules/polymers is still in the experimental phase and it will take years before we see support for this solution. And databases such as PubChem/ChemSpider generate their entries based on monomers, which is why they contain incorrect structures (of monomers, not macromolecules) and incorrect chemical formulas, SMILES, atomic masses etc. are imported to WD. I'd say that (C₁₂H₂₂N₂O₂)_n is the correct formula for this item, but there should be no InChI/InChIKey/SMILES/PubChem/ChemSpider statements or they should be ranked as 'deprecated' with the reason 'incorrect structure of chemical entity'. Wostr (talk) 12:18, 13 September 2024 (UTC)[reply]

Thank you for your explanation. I have undo my edit in the Objekt. But I have now one more questen. We have in the Objekt the EchaID 100.130.739 With EG-Number 608-706-6 but now have Rjh finde EG-Number 922-176-6 wich we have in ECHA-ID 100.114.640. Have we to add this two also to the WD-Objekt? --Calle Cool (talk) 21:30, 16 September 2024 (UTC)[reply]

@Calle Cool: it seems that 100.114.640 is a duplicate. I'll ask them whether they can merge it with 100.130.739 or both ECHA entries are needed because of some reason. If both entries are needed and cannot be merged, both should be in the item. I'll let you know about the ECHA answer. Wostr (talk) 21:45, 16 September 2024 (UTC)[reply]

@Calle Cool: I got answer from ECHA. Unfortunately, both entries will remain as it is now. 100.114.640 → The list of pre-registered substances is static and will remain available in the link below as a historic document with no legal validity. ECHA confirmed that only 100.130.739 is a valid entry and this one should be used. I'll try to add '100.114.640' to the item with a deprecated rank and some comment. Wostr (talk) 18:00, 18 September 2024 (UTC)[reply]

Ok - and EG-Number 922-176-6 (from 100.114.640)? I think same? Take in but with the remark Old? --Calle Cool (talk) 18:36, 18 September 2024 (UTC)[reply]

Yes, I forgot about that. It's now added. Wostr (talk) 20:10, 18 September 2024 (UTC)[reply]

Perfect - Thank you Calle Cool (talk) 19:04, 20 September 2024 (UTC)[reply]

Checkrequest about Nafarelin substances

Could you pls check Q27270261 and Q27289963 too. One of this is nafarelin acetate and the other one nafarelin acetate hydrat... When I look here: [10] should be Q27270261 the Acetat...--Calle Cool (talk) 19:06, 20 September 2024 (UTC)[reply]

@Calle Cool: I see no error here. [11] may have a name 'Nafarelin Acetate', but the structure diagram shows that this entry is about a monohydrate, so it seems that it is correctly linked to Q27270261 (which is probably correctly described as monohydrate, I don't have access to SciFinder, so I can't confirm this, but there is no contradictory information here). The only error may be that OEHHA assigned an incomplete name to this compound. Wostr (talk) 19:20, 20 September 2024 (UTC)[reply]

Yes that could be with OEHHA... I work in DE-Wiki at a Liste and I will be note this fact.--Calle Cool (talk) 07:47, 26 September 2024 (UTC)[reply]

Checkrequest about whiskey lactones / oak lactones / quercus lactones (methyloctanolides)

could you help to check Q5122105 and Q130360853 (cis-3-methyl-4-octanolide) if we can merge them? They have different CAS-Number.. thank you --Calle Cool (talk) 07:47, 26 September 2024 (UTC)[reply]

Wenn I Search CAS 147254-32-8 from Objekt Q5122105 at Chemspider, I Get ID 9404230 and not 37679 which is entered there... Same with Puchem with CAS 147254-32-8 I get there 11229182 and not 41285 wich ist entered in Q5122105 --Calle Cool (talk) 09:34, 26 September 2024 (UTC)[reply]

I can't check the CAS numbers as I don't have access to CAS Registry, but if the recent edits are correct (one CAS no is for R,R and the second one is for S,S isomer), then only some adjustments of PubChem/ChemSpider are in order (I'll try to check it later, maybe tomorrow). Wostr (talk) 18:26, 27 September 2024 (UTC)[reply]

I think I've managed to clean this up. There are now 8 items:

5-butyl-4-methyloxolan-2-one (Q421685) (main item with de.wiki link for every of 4 stereoisomers) --Kreuz Elf (talk) 16:52, 5 October 2024 (UTC)[reply]
- trans-5-butyl-4-methyloxolan-2-one (Q130387514) (main item for two trans isomers, with en.wiki link and some others) --Kreuz Elf (talk) 16:51, 5 October 2024 (UTC)[reply]
  - (4S,5R)-5-butyl-4-methyloxolan-2-one (Q130360853) --Kreuz Elf (talk) 16:50, 5 October 2024 (UTC)[reply]
  - (4R,5S)-5-butyl-4-methyloxolan-2-one (Q7833482) --Kreuz Elf (talk) 16:49, 5 October 2024 (UTC)[reply]
- cis-5-butyl-4-methyloxolan-2-one (Q130387503) (main item for two cis isomers, with en.wiki link and some others) This wd object should actually have CAS No. 55013-32-6, otherwise it doesn't make sense. The current CAS No. is for a completely different substance!--Kreuz Elf (talk) 09:56, 5 October 2024 (UTC)[reply]
  - (4S,5S)-5-butyl-4-methyloxolan-2-one (Q27276558) --Kreuz Elf (talk) 09:54, 5 October 2024 (UTC)[reply]
  - (4R,5R)-5-butyl-4-methyloxolan-2-one (Q5122105) The current CAS No. 55013-32-6 is for the "rel-(4R,5R)" form. Correct CAS specifically for (4R, 5R) would be CAS No. 105015-53-0--Kreuz Elf (talk) 09:50, 5 October 2024 (UTC)[reply]
3-Methyl-4-octanolide (Q4634169) (disambig) --Kreuz Elf (talk) 07:32, 5 October 2024 (UTC)[reply]

I fixed links from de.wiki article → WD and checked that de.wiki infobox is aligned with the above items in regard to CAS numbers and PubChem IDs. CAS 147254-32-8 seems to be about not a specific stereoisomer, but both cis isomers. Wostr (talk) 18:35, 30 September 2024 (UTC)[reply]

Thx for this updates. I have ask Kreuz Elf again to help with SciFinder.With reference to Q130387514 -> What did you mean 9259269 or 9280733 is the right Chemspider Object?--Calle Cool (talk) 07:01, 1 October 2024 (UTC)[reply]

@Calle Cool: I'd say that neither. cis-5-butyl-4-methyloxolan-2-one (Q130387503) and trans-5-butyl-4-methyloxolan-2-one (Q130387514) probably can't have a PubChem/ChemSpider ids. 9259269 is for (4S,5R)-5-butyl-4-methyloxolan-2-one (Q130360853) and 9280733 is for (4R,5S)-5-butyl-4-methyloxolan-2-one (Q7833482). In the cis-5-butyl-4-methyloxolan-2-one (Q130387503) ChemSpider 9404230 is for different compound (decanolide, not octanolide), just like PubChem 11229182. The reason why cis-5-butyl-4-methyloxolan-2-one (Q130387503) and trans-5-butyl-4-methyloxolan-2-one (Q130387514) will probably not have any ChemSpider/PubChem IDs is that entries in such databases are usually generated on the basis of InChI. In this case it not possible to generate standard InChI for a structure with relative stereochemistry, standard InChI can be generated either for R,R-isomer or S,S-isomer for the cis variant and either for R,S-isomer or S,R-isomer for the trans variant. Wostr (talk) 12:39, 1 October 2024 (UTC)[reply]

PS Items like trans-5-butyl-4-methyloxolan-2-one (Q130387514) and cis-5-butyl-4-methyloxolan-2-one (Q130387503) are mainly needed because some Wikipedias have articles on this level of describing these structures. It's much better to follow de.wiki and have one article with every four stereoisomers described (then intermediate items like trans-5-butyl-4-methyloxolan-2-one (Q130387514) and cis-5-butyl-4-methyloxolan-2-one (Q130387503) may be skipped). Wostr (talk) 12:42, 1 October 2024 (UTC)[reply]

Hello Wostr. This discussion has gone quite long. I don't have an overview anymore to tell what things specifically you would like me to check in SciFinder. For now, let me just say that CAS 147254-32-8 is for cis-5-Hexyldihydro-4-methyl-2(3H)-furanone. Kreuz Elf (talk) 18:05, 2 October 2024 (UTC)[reply]

@Kreuz Elf: I'm not sure there is anything to check here. As far as I checked, CAS numbers and other IDs reflect the de.wiki infobox, 147254-32-8 is added to cis-5-butyl-4-methyloxolan-2-one (Q130387503) as it describes relative cis configuration (it is available via Common Chemistry), 39638-67-0 is added to trans-5-butyl-4-methyloxolan-2-one (Q130387514) so I suppose it also described relative trans configuration (this is the only thing that could be checked). Wostr (talk) 18:41, 4 October 2024 (UTC)[reply]

@Wostr actually, there is. I have to ask you, why you created item Q130387503 since it is redundant with the item Q5122105 created in 2013 on which you edited to, and your new item has the wrong CAS No. CAS 147254-32-8 is for a hexylmethyl lactone, not butyl. It would probably be best to delete your newly created item. Kreuz Elf (talk) 07:22, 5 October 2024 (UTC)[reply]

There is a reason for the two newly created items, because there are interwikis and UNII ids that cannot be added to other items. These items are not duplicates: they are describing structures with relative congiguration instead of an absolute configuration. About the CAS number: yes, in this case you are right, I didn't checked it well enough, just used the number that was already in one of the items. Wostr (talk) 09:54, 5 October 2024 (UTC)[reply]

Okay, I didn't see your inline comments above while using a phone. The CAS 147254-32-8 was indeed incorrect, I didn't check it carefully enough to see this, just copied it from the other item (and this addition was a basis for Calle Cool addition of PubChem and ChemSpider). 55013-32-6 matching to (4R,5R)-5-butyl-4-methyloxolan-2-one (Q5122105) was done mainly on the basis of de.wiki article. As you are confirming right now that it should be matched to cis-5-butyl-4-methyloxolan-2-one (Q130387503), I'll change it (but it should be also changed in de.wiki as well). Wostr (talk) 14:44, 5 October 2024 (UTC)[reply]

made changes on dewiki.--Kreuz Elf (talk) 16:48, 5 October 2024 (UTC)[reply]

Another note: I checked all of the 8 items now for coherence between CAS No. and the Lemma. Nothing else was checked, though. Since there has been quite some confusion about these substances it would be best if somebody would check every other numerical identifier, meaning: InChi, InChiKey, canonical SMILES, isomeric SMILES, ChemSpider, PubChem, ECHA-ID and EC number. Since checking a known number does not need SciFinder access I won't do it. In case you two should not know, I recently discovered you can generate an image of the substance from SMILES and InChi starting on the wikidata item by clicking on the number. I'm not sure if it will work all the time, but maybe you can try. Have a nice day!--Kreuz Elf (talk) 16:56, 5 October 2024 (UTC)[reply]

Thanks, I'll check it later today or tomorrow. And yes, InChI values have this feature for a long time, for SMILES it works (without problems) probably for a year or two as a gadget that is default for everyone(?). Wostr (talk) 17:22, 5 October 2024 (UTC)[reply]

1,1′,1″-[(Chlordisulfanyl)methantriyl]tribenzol

Hi - Did you now wich pubChem ID is the right one? there are many... Calle Cool (talk) 11:37, 8 October 2024 (UTC)[reply]

Only 5086630 which is not one of the results. Searching in PubChem sometimes gives only substance (SID) results, not compound (CID) for which PubChem CID (P662) is for. SIDs are created in PubChem based on external databases (and are a kind of duplication of information from an external database); for one PubChem compound (CID) there may be several substance entries (SIDs). In every result on the page you've linked, you have "Substance SID: ....... Compound CID: 5086630" and this compound CID is the correct ID for this item. Wostr (talk) 19:31, 8 October 2024 (UTC)[reply]

I think that this discussion is resolved and can be archived. If you disagree, don't hesitate to replace this template with your comment. Calle Cool (talk) 23:10, 8 October 2024 (UTC)[reply]

di-sec-butyl trisulfide (Q130466123

Pherhaps you can also have a look to this object - many thanks Calle Cool (talk) 06:42, 9 October 2024 (UTC)[reply]

Thank you for Crosschecking and mergin --Calle Cool (talk) 08:43, 12 October 2024 (UTC)[reply]

I think that this discussion is resolved and can be archived. If you disagree, don't hesitate to replace this template with your comment. Calle Cool (talk) 08:38, 12 October 2024 (UTC)[reply]

Vidofludimus-Calcium (Q130466805)

Hi Wostr -> Vidofludimus-Calcium is also a good candidate for a crosscheck -> If you have time... Thank you in advance Calle Cool (talk) 08:48, 12 October 2024 (UTC)[reply]

Here we have a problem of the correct ratio of carboxylate anion to calcium cation. Right now InChI/InChIKey/SMILES are added for the non-stoichiometric 1:1 ratio, while chemical formula, molecular mass, PubChem, ChemSpider are referring to 2:1 ratio. Before any fixes can be applied, it should be checked whether CAS 1354012-90-0 is referring to 1:1 or 2:1 ratio → if it is referring to 1:1 ratiom then two items should exists for 1:1 and 2:1 ratios. ECHA infocard is not helpful here, because calcium 2-((3-fluoro-3'-methoxy-[1,1'-biphenyl]-4-yl)carbamoyl)cyclopent-1-ene-1-carboxylate may refer to both ratios (although there is no prefix that multiplies the carboxylate anion in this name, it is not completely necessary considering that we have a compound with the calcium cation, which is by default divalent). Wostr (talk) 10:28, 13 October 2024 (UTC)[reply]

Hi Wostr. CAS 1354012-90-0 is 1 carboxylate to 1/2 Calcium. I very much dislike this formalism but it is the way of SciFinder to say they mean a 2:1 ratio. Kreuz Elf (talk) 15:53, 13 October 2024 (UTC)[reply]

Other than that, I could in fact find a CAS for a 1:1 ratio, and that is CAS 2245772-27-2. No idea what sense to make of that. In case your interested, there's also CAS 2728666-90-6 for the "real" salt, so 2:1, as a monohydrate, which might be the only one of the three with actual practical relevance although it's common that vendors mix the Numbers up in such cases (very bad practice). Kreuz Elf (talk) 15:57, 13 October 2024 (UTC)[reply]

I have open Q130526074 for the 1:1 Ratio and Q130526085 for the Monohydrate--Calle Cool (talk) 18:42, 13 October 2024 (UTC)[reply]

With some delay (sorry, but I had a lot of duties at work), but it seems to me that all 3 items are now in order. Wostr (talk) 11:44, 28 October 2024 (UTC)[reply]

I think that this discussion is resolved and can be archived. If you disagree, don't hesitate to replace this template with your comment. Thank you for checking Calle Cool (talk) 07:12, 29 October 2024 (UTC)[reply]

Lagochilintetraacetat (Q130494145)

Hi Wostr -> Could make here a cresscheck too - Thank you Calle Cool (talk) 20:31, 13 October 2024 (UTC)[reply]

There doesn't seem to be much more that can be added here. Wostr (talk) 11:51, 28 October 2024 (UTC)[reply]

I think that this discussion is resolved and can be archived. If you disagree, don't hesitate to replace this template with your comment. Thank you for the Updates Calle Cool (talk) 12:36, 28 October 2024 (UTC)[reply]

2-Bromacetyl-5-nitrofuran (Q130616335)

If you have time - could you pls look at this item too - thank you Calle Cool (talk) 05:53, 23 October 2024 (UTC)[reply]

I will, I promise, but it may take a few days, because tomorrow and the day after tomorrow will be quite time-consuming at my work. Wostr (talk) 20:13, 23 October 2024 (UTC)[reply]

Looks okay. Wostr (talk) 11:57, 28 October 2024 (UTC)[reply]

I think that this discussion is resolved and can be archived. If you disagree, don't hesitate to replace this template with your comment. Thank you for the updates Calle Cool (talk) 12:35, 28 October 2024 (UTC)[reply]

Sophoridin problem (Q27292355)

Hi The mention CAS in this Obect is (-)-Sophoridine (6882-68-4) But Chemspider ID 145087 which are also in this object said (+)-Allomatrine. At the moment it exist Q72508572 with name (+)-Sophoridine. Now the question Should Q27292355 (-)-Sophoridine? or for both? Calle Cool (talk) 07:04, 25 October 2024 (UTC)[reply]

This would require to check all the stereoisomers, so it will take me a while. Wostr (talk) 11:59, 28 October 2024 (UTC)[reply]

Sophocarpin (Q72508563)

Which Chemspider entry is right? 88298494 or 103136. Same question with Pubchem... 115269 or 71748607. Calle Cool (talk) 06:56, 28 October 2024 (UTC)[reply]

And what ist the different to Q72508561 (Sophocarpin)? Both are (-)-Sophocarpine or one is (+-)?!?--Calle Cool (talk) 07:02, 28 October 2024 (UTC)[reply]

(3αあるふぁ)-3-Acetoxyursa-9(11),12-dien-24-oic acid Q130722773

Sorry for invite you again. Could you said which PubChem object is the right one? Calle Cool (talk) 07:14, 29 October 2024 (UTC)[reply]

Q104397342 (N-Oxysophocarpine) vs Q105223953 (Oxysophocarpine )

Is that not the same? I make now vacation - so it is the last post for a while 😅 Calle Cool (talk) 07:25, 29 October 2024 (UTC)[reply]