(3,4-Dichloro-alpha-methoxybenzyl)penicillin 1926-49-4 Clometacillin Clometocilina [INN-Spanish] Clometocillin Clometocillin (Chirality on alpha-mehtoxybenzyl) Clometocillin [DCF:INN] Clometocilline [INN-French] Clometocillinum [INN-Latin] EINECS 217-657-6