6-(2,2-Dimethyl-5-oxo-4-phenyl-1-imidazolidinyl)penicillanic acid;a semisynthetic penicillin compound with antimicrobial properties. ... Synonym: phenazacillin. ... (05 Mar 2000) ... Found on http://www.encyclo.co.uk/local/20973
(het″ә-sil´in) a semisynthetic penicillin that is converted in the body to ampicillin and has actions and uses similar to those of ampicillin. Found on http://www.encyclo.co.uk/local/21001