title: Comparison of gas chromatographic calibration methods for analysis of menadione and menadione sodium bisulfite content of pharmaceutical products.
mesh_terms: D000840:Anisoles; D002626:Chemistry, Pharmaceutical; D002849:Chromatography, Gas; D008722:Methods; D013447:Sulfites / Q000032:analysis*; D014812:Vitamin K / Q000032:analysis* / Q000592:standards
chemical_list: D000840:Anisoles; D013447:Sulfites; D014812:Vitamin K