Brassinazole is a member of the class of triazoles that is butan-2-ol which is substituted at positions 2, 3, and 4 by phenyl, 1H-1,2,4-triazol-1-yl and p-chlorophenyl groups, respectively. An inhibitor of brassinosteroid biosynthesis. It has a role as a brassinosteroid biosynthesis inhibitor. It is a member of triazoles, a tertiary alcohol and a member of monochlorobenzenes.