Cat. Name CAS. Structure Purity
M097499 [1,1/'-Biphenyl]-2,2/'-disulfonic acid, 4-[(1-hydr 159317-41-6 [1,1/'-Biphenyl]-2,2/'-disulfonic acid, 4-[(1-hydroxy-4-sulfo-2-naphthalenyl) azo]-5,5/'-dimethyl-4/ ≥ 95%