71888-82-9(2,7-Naphthalenedisulfonic acid, 4-hydroxy-5-[[4-(phenylamino)-5-sulfo-1-naphthalenyl]azo]-, compds. with N,N'-di(phenyl, tolyl and xylyl)guanidine (1:3))

71888-82-9(2,7-Naphthalenedisulfonic acid, 4-hydroxy-5-[[4-(phenylamino)-5-sulfo-1-naphthalenyl]azo]-, compds. with N,N'-di(phenyl, tolyl and xylyl)guanidine (1:3))推荐供应商