R-Lorcaserin HCL CAS No. 856681-05-5 Chemical name "(R)-8-chloro-1-methyl-2,3,4,5-tetrahydro-lH-3-3-benzazepine Hydrochloric acid hemihydrate" (1R)-8-Chloro-2,3,4,5-tetrahydro-1-methyl-1H-3-benzazepine hydrochloride hemihydrate Molecular formula 2 (C11H14ClN).2 (HCl).H2O Molecular weight 482.32 Uses: new diet pills