Synonyms: FastBrown Salt RR;Benzenamine,2-[(2-chloro-4-nitrophenyl)azo]-5-methoxy-4-methyl- (9CI); Fast Brown Salt VA; Fast Brown V Salt;Benzenamine,2-[2-(2-chloro-4-nitrophenyl)diazenyl]-5-methoxy-4-methyl-; m-Anisidine,6-[(2-chloro-4-nitrophenyl)azo]-4-methyl- (6CI,7CI,8CI); Fast Brown Salt V; FastBrown VA Salt; Brown Salt NV;