3,3-Dimethyl-6-hexanamido-7-oxo-4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid 4-27-00-05859 (Beilstein Handbook Reference) 4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 3,3-dimethyl-6-hexanamido-7-oxo- 4493-18-9 Amylpenicillin BRN 0039499 Dihydropenicillin F Hexanoylpenicillin Penicillin DF