2-Pyrazoline-3-carboxylic acid, 5-oxo-1-(p-sulfophenyl)-4-((p-sulfophenyl)azo)-, compd. with methyl o-(6-(ethylamino)-3-(ethylimino)-2,7-dimethyl-3H-xanthen-9-yl)benzoate (1:3) 3,6-Bis(ethylamino)-9-(2-(methoxycarbonyl)phenyl)-2,7-dimethylxanthylium, salt with 4,5-dihydro-5-oxo-1-(4-sulphophenyl)-4-((4-sulphophenyl)azo)-1H-pyrazole-3-carboxylic acid (3:1) 67874-58-2 EINECS 267-485-0 Xanthylium, 3,6-bis(ethylamino)-9-(2-(methoxycarbonyl)phenyl)-2,7-dimethyl-, salt with 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-((4-sulfophenyl)azo)-1H-pyrazole-3-carboxylic acid (3:1)