97-26-7 Ammonium, [4-[(4,6-diamino-m-tolyl)imino]-2,5-cyclohexadien-1-ylidene]dimethyl-, chloride C.I. 49410 Methanaminium, N-[4-[(2,4-diamino-5-methylphenyl)imino]-2,5-cyclohexadien-1-ylidene]-N-methyl-, chloride NSC56341 Toluylene Blue Toluylene blue (biological stain)