Synonyms: 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylicacid, 6-(2,6-dimethoxybenzamido)-3,3-dimethyl-7-oxo-, monosodium salt (8CI);4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid,6-[(2,6-dimethoxybenzoyl)amino]-3,3-dimethyl-7-oxo-, monosodium salt,(2S,5R,6R)- (9CI); 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid,6-[(2,6-dimethoxybenzoyl)amino]-3,3-dimethyl-7-oxo-, monosodium salt, [2S-(2a,5a,6b)]-; Azapen; BRL 1241; Belfacillin; Celbenin; Celpillina; Celpilline;Cinopenil; Dimethoxyphenecillin sodium; Dimocillin; Dimocillin sodium;Dimocillin-R-2; Estafcilina; Flabelline; Lucopenin; Methicillin sodium;Methicillin sodium salt; Meticillin sodium; Meticillin sodium salt; Penaureus;Penistaph; Penysol; SQ 16123; Sodium (2,6-dimethoxyphenyl)penicillin; Sodium6-(2,6-dimethoxybenzamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate;Sodium 6-(2',6'-dimethoxybenzamido)penicillanate; Sodiumdimethoxyphenylpenicillin; Sodium methicillin; Staficyn; Staphcillin;Synticillin; X-1497