Toluidine bule, BS;TOLUIDINE BLUE FOR MICROSCOPY;TOLUIDINE BLUE C.I. No 52040;Phenothiazin-5-ium, 3-amino-7-(dimethylamino)-2-methyl-, chloride, compd. with zinc chloride (ZnCl2);Zinc chloride compd. with 3-amino-7-(dimethylamino)-2-methylphenothiazin-5-ium chloride;(7-amino-8-methylphenothiazin-3-ylidene)-dimethylazanium,dichlorozinc,dichloride;Toluidine Blue, for microscopy (Hist., Vit.);Toluidine blue (ZnCl2)