title: [Determination of the N-methyl group in organic substances on the micro and decimomilligram scale].
mesh_terms: D000083:Acetanilides / Q000032:analysis; D000632:Aminopyrine / Q000032:analysis; D000983:Antipyrine / Q000032:analysis; D002110:Caffeine / Q000032:analysis; D004155:Diphenhydramine / Q000032:analysis; D004809:Ephedrine / Q000032:analysis; D007202:Indicators and Reagents; D008745:Methylation; D008832:Microchemistry; D013805:Theobromine / Q000032:analysis; D013806:Theophylline / Q000032:analysis
chemical_list: D000083:Acetanilides; D007202:Indicators and Reagents; D000632:Aminopyrine; D002110:Caffeine; D004155:Diphenhydramine; D013806:Theophylline; D004809:Ephedrine; D013805:Theobromine; D000983:Antipyrine
vernacular_title: La determinazione del gruppo N-metile nelle sostanze organiche in scala micro e di decimo di milligrammo.