Trinatrium-5-(acetylamino)-3-[(4-ethoxy-3-sulphonatophenyl)azol]-4-hydroxynaphtalin-2,7-disulphonat

trisodium 5-(acetylamino)-3-[(4-ethoxy-3-sulphonatophenyl)azo]-4-hydroxynaphthalene-2,7-disulphonate

5-Acetylamino-3-[[4-ethoxy-3-(sodiooxysulfonyl)phenyl]azo]-4-hydroxy-2,7-naphthalenedisulfonic acid disodium salt