3,3-Dimethyl-6-octanamido-7-oxo-4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid 4-Thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid, 3,3-dimethyl-6-octanamido-7-oxo- 525-97-3 Heptylpenicillin Octanoylpenicillin Penicillin A Penicillin IV Penicillin K