title: Internal standards for gas chromatographic analysis of metabolic end products from anaerobic bacteria.
abstract: 2-Methylpentanoic acid and benzoic acid are suggested for use as routine internal standards for gas chromatographic analysis of microbial end products.
mesh_terms: D000143:Acids / Q000032:analysis*; D000693:Anaerobiosis; D001441:Bacteroides fragilis / Q000032:analysis*; D001565:Benzoates / Q000592:standards*; D002849:Chromatography, Gas; D010421:Pentanoic Acids / Q000592:standards*; D014631:Valerates / Q000592:standards*
chemical_list: D000143:Acids; D001565:Benzoates; D010421:Pentanoic Acids; D014631:Valerates