CAS Number: 40175-36-8
Chemical Name: Adipyl-6-Aminopenicillanic Acid
Molecular Formula: C14H20N2O6S
Molecular Weight: 344.38

CAS Number: 58678-43-6
Chemical Name: Isopenicillin N
Molecular Formula: C14H21N3O6S
Molecular Weight: 359.4