Mecillinam

Molecular Formula: C15H23N3O3S
CAS Number: 32886-97-8, 32887-01-7
Appearance: White or off-white crystalline powder

Mecillinam or amdinocillin is an extended-spectrum penicillin antibiotic of the amidinopenicillin class that binds specifically to penicillin binding protein 2, and is only considered to be active against Gram-negative bacteria.

Pivmecillinam (INN) or amdinocillin pivoxil is an orally active prodrug of mecillinam,