Bis[4-[3-[2-hydroxy-3-[N-(p-methoxyphenyl)carbamoyl]-1-naphtylazo]-4-methylbenzoylamino]benzenesulfonic acid]calcium salt

Bis[4-[3-[2-hydroxy-3-[N-(4-methoxyphenyl)carbamoyl]-1-naphtylazo]-4-methylbenzoylamino]benzenesulfonic acid]calcium salt

calcium bis[4-[[3-[[2-hydroxy-3-[[(4-methoxyphenyl)amino]carbonyl]-1-naphthyl]azo]-4-methylbenzoyl]amino]benzenesulphonate]

Benzenesulfonic acid, 4-3-2-hydroxy-3-(4-methoxyphenyl)aminocarbonyl-1-naphthalenylazo-4-methylbenzoylamino-, calcium salt (2:1)

4-[[3-[[2-Hydroxy-3-[[(4-methoxyphenyl)amino]carbonyl]-1-naphthalenyl]azo]-4-methylbenzoyl]amino]benzenesulfonic acid, calcium salt (2:1)