12236-46-3

1-Naphthalenesulfonic acid, 4-amino-, diazotized, coupled with 2-(2,4-dihydroxyphenyl)-3,5,7-trihydroxy-4H-1-benzopyran-4-one and (3,4-dihydroxyphenyl)(2,4,6-trihydroxyphenyl)methanone