Synonyms: 3,4,5-Trimethoxyphenylpenicillin sodium;4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 3,3-dimethyl-7-oxo-6-(3,4,5-trimethoxybenzamido)-, monosodium salt;sodium 3,3-dimethyl-7-oxo-6-[(3,4,5-trimethoxybenzoyl)amino]-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate;AC1Q1VVL;AR-1L4656;LS-149870