Einecs 219-615-2

1-[(2-hydroxynaphthyl)methyl]-2-naphthyl 6-diazo-5,6-dihydro-5-oxonaphthalene-1-sulphonate

6-Diazo-5,6-dihydro-5-oxo-1-naphthalenesulfonic acid 1-[(2-hydroxy-1-naphtyl)methyl]-2-naphtyl ester