Synonyms: Isopenicillin N;CHEBI:18165;IP1;Penicillin M;Isopenicilline N;AC1L99U1;CHEMBL1233639;C05557;6beta-[(5S)-5-amino-5-carboxypentanamido]-2,2-dimethylpenam-3alpha-carboxylic acid;(2S,5R,6R)-6-[(5S)-5-amino-5-carboxypentanamido]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid;(2S,5R,6R)-6-[[(5S)-5-amino-6-hydroxy-6-oxohexanoyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid;4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, 6-[(5-amino-5-carboxy-1-oxopentyl)amino]-3,3-dimethyl-7-oxo-, [2S-[2alpha,5alpha,6beta(R*)]]-;4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, 6-[[(5S)-5-amino-5-carboxy-1-oxopentyl]amino]-3,3-dimethyl-7-oxo-, (2S,5R,6R)-;58678-43-6