113-45-1 2-Piperidineacetic acid, alpha-phenyl-, methyl ester 298-59-9 4311/B Ciba C 4311 Calocain Concerta DEA No. 1724 EINECS 204-028-6 HSDB 3126 METHYLPHENIDATE Meridil Methyl (2-phenyl-2-(2-piperidyl)acetate) Methyl alpha-phenyl-alpha-(2-piperidyl)acetate Methyl phenidate Methyl phenidylacetate Methylofenidan Methylphenidan Methylphenidatum [INN-Latin] Metilfenidato [INN-Spanish] Metilfenidato [Italian] NCI-C56280 Phenidylate Plimasine alpha-Phenyl-2-piperidineacetic acid methyl ester alpha-Phenyl-alpha-(2-piperidyl)acetic acid methyl ester