Benzothiazolium, 2-(2-methyl-3-(3-(3-sulfopropyl)-2(3H)-benzothiazolylidene)-1-propen-1-yl)-3-(3-sulfopropyl)-, inner salt, compd. with N,N-diethylethanamine (1:1);Benzothiazolium, 2-(2-methyl-3-(3-(3-sulfopropyl)-2-benzothiazolinylidene)-1-propenyl)-3-(3-sulfopropyl)-, hydroxide, inner salt, compd. with triethylamine (1:1);Benzothiazolium, 2-(2-methyl-3-(3-(3-sulfopropyl)-2(3H)-benzothiazolylidene)-1-propenyl)-3-(3-sulfopropyl)-, inner salt, compd. with N,N-diethylethanamine (1:1);Hydrogen 2-(2-methyl-3-(3-(3-sulphonatopropyl)benzothiazol-2(3H)-ylidene)prop-1-enyl)-3-(3-sulphonatopropyl)benzothiazolium, compound with triethylamine (1:1);3-[(2Z)-2-{(2E)-2-methyl-3-[3-(3-sulfopropyl)-1,3-benzothiazol-3-ium-2-yl]prop-2-en-1-ylidene}-1,3-benzothiazol-3(2H)-yl]propane-1-sulfonate - N,N-diethylethanamine (1:1)