In cell suspension cultures of corn (Zea mays) with
14C-benoxacor, benoxacor is rapidly metabolized to six
detectable metabolites within 0.5 h. Twelve
metabolites are detected in extracts from the treated
cells for 24 h. Of the three predominant metabolites
present, two metabolites are the catabolic
formylcarboxamide and carboxycarboxamide
derivatives of benoxacor. The third one is the mono
glutathione conjugate of benoxacor. This metabolite
consists of a single glutathione molecule linked via the
cysteinyl sulfhydryl group to the N-dichloroacetyl a-
carbon of benoxacor. A catabolic a-hydroxyacetamide
derivative is detected as well as its amino acid conjugates either containing glutathione residue or
presumably derived from the glutathione residue.
A disaccharide conjugate is identified as
S-(O-diglycoside)glutathione conjugate.