Bupivacaine hcl CAS No.: 14252-80-3 Synonyms Bupivacaine hydrochloride; 1-Butyl-N-(2,6-dimethylphenyl)-2-piperidinecarboxamide hydrochloride Molecular Structure CAS # 14252-80-3, Bupivacaine hydrochloride, 1-Butyl-N-(2,6-dimethylphenyl)-2-piperidinecarboxamide hydrochloride Molecular Formula C18H28N2O.HCl Molecular Weight 324.89 CAS Registry Number 14252-80-3 USAGE:Local anesthesia