Synonyms: 2,5-Diphenyl-3-a-naphthyltetrazolium chloride;Tetrazolium purple;Tetrazolium violet chloride;VT;Violet Tetrazolium;2H-Tetrazolium,3-(1-naphthalenyl)-2,5-diphenyl-, chloride (9CI);2H-Tetrazolium, 3-(1-naphthyl)-2,5-diphenyl-,chloride (8CI);3-(1-Naphthyl)-2,5-diphenyl-2H-tetrazolium chloride (7CI);2,5-Diphenyl-3-(1-naphthyl)-2H-tetrazolium chloride;2,5-Diphenyl-3-(1-naphthyl)tetrazolium chloride;