Synonyms: 3H-Indolium,3-[(2,4-dihydro-2,4-dimethyl-3H-1,2,4-triazol-3-ylidene)hydrazono]-1-methyl-2-phenyl-,chloride (9CI);3-(1-Methyl-2-phenylindolyl-3-azo)-2,4-dimethyl-1,2,4-triazolium chloride;3-[(2,4-Dihydro-2,4-dimethyl-3H-1,2,4-triazol-3-ylidene)hydrazono]-1-methyl-2-phenyl-3H-indoliumchloride; Basacryl Yellow 5RL; Basic Yellow 25; C.I. Basic Yellow 25