19262-68-1 2-Piperidineacetic acid, alpha-phenyl-, methyl ester, hydrochloride, (R-(R*,R*))- 2-Piperidineacetic acid, alpha-phenyl-, methyl ester, hydrochloride, (alphaR,2R)- 35652-13-2 D-threo-Methylphenidate hydrochloride Dexmethylphenidate hydrochloride Dexmethylphenidate hydrochloride [USAN] Focalin Focalin XR Methyl (2R)-phenyl((2R)-piperidin-2-yl)acetate hydrochloride