potassium,sodium 2,4-diamino-3-[4-(2-sulfonatoethoxysulfonyl)phenylazo]-5-[4-(2-sulfonatoethoxysulfonyl)-2-sulfonatophenylazo]-benzenesulfonate

2,4-Diamino-3-[4-(2-sulfoxyethylsulfonyl)-phenylazo]-5-[4-(2-sulfoxyethylsulfonyl)-2-sulfophenylazo]-benzenesulfonic acid potassium sodium salt

Benzenesulfonic acid, 2,4-diamino-3-4-2-(sulfooxy)ethylsulfonylphenylazo-5-2-sulfo-4-2-(sulfooxy)ethylsulfonylphenylazo-, potassium sodium salt