Carfecillin Sodium

Carfecillin Sodium Chemical formula
Synonyms: BRL-3475; Carbenicillin Phenyl Sodium (USAN); Carfecilina sódica; Carfécilline Sodique; Natrii Carfecillinum. Sodium (6R)-6-(2-phenoxycarbonyl-2-phenylacetamido)penicillanate.
Cyrillic synonym: Натрий Карфециллин.

Chemical information

Chemical formula: C23H21N2NaO6S = 476.5.
CAS — 27025-49-6 (carfecillin); 21649-57-0 (carfecillin sodium).
ATC — G01AA08.
ATC Vet — QG01AA08.


Carfecillin is the phenyl ester of carbenicillin to which it is hydrolysed after absorption from the gastrointestinal tract. Its use has been restricted to the treatment of urinary-tract infections due to Pseudomonas spp. and other sensitive bacteria including Proteus spp.
Published December 11, 2018.