SMILES: CC1=C(C(=O)N(N1)C2=CC(=C(C=C2Cl)S(=O)(=O)[O-])Cl)N=NC3=CC=C(C=C3)S(=O)(=O)[O-].[Na+].[Na+]
Description: The molecule is an organic sodium salt that is the disodium salt of 2,5-dichloro-4-{5-hydroxy-3-methyl-4-[(4-sulfophenyl)diazenyl]pyrazol-1-yl}benzene-1-sulfonic acid. It is used as the erythrocyte stain in Garvey's method for elastic, fibrin and collagen as well as a substitute for martius yellow in Lendrum's MSB. It has a role as a histological dye, a food colouring and an allergen. It contains a lissamine fast yellow(2-).