CAS No 61951-82-4 , (3Z)-5-[[4-chloro-6-[4-[[4-chloro-6-[[(7Z)-8-oxo-3,
6-disulfo-7-[(2-sulfophenyl)hydrazinylidene]naphthalen-1-yl]amino]-1,3,
5-triazin-2-yl]amino]anilino]-1,3,
5-triazin-2-yl]amino]-4-oxo-3-[(2-sulfophenyl)hydrazinylidene]
naphthalene-2,7-disulfonic acid