1203-85-6 4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 6-amino-3,3-dimethyl-7-oxo-, monosodium salt 551-16-6 6-Aminopenicillanic acid sodium salt Sodium 6-aminopenicillanate Sodium 6-aminopenicillinate