BW-A 58C also known as 2-(4-tert-butylcyclohexyl)-3-hydroxy-1,4-naphthoquinone, is an experimental naphthoquinone antimalarial drug which undergoes extensive alkyl hydroxylation to a single t-butylhydroxy metabolite in man in vivo and also in human liver microsomes, where this is catalysed primarily by a 54 kDa CYP2C9 form of cytochrome P450, P450hB20-27.
