(Translated by https://www.hiragana.jp/) Simultaneous assay of methylphenobarbital and phenobarbital in plasma using gas chromatography--mass spectrometry with selected ion monitoring
Simultaneous assay of methylphenobarbital and phenobarbital in plasma using gas chromatography--mass spectrometry with selected ion monitoring
J Chromatogr. 1981 May 8;223(2):426-31.
doi: 10.1016/s0378-4347(00)80117-6.