7-benzamido-4-hydroxy-3-[[4-[(4-sulphophenyl)azo]phenyl]azo]naphthalene-2-sulphonic acid

Modify Date: 2025-10-31 12:54:39

7-benzamido-4-hydroxy-3-[[4-[(4-sulphophenyl)azo]phenyl]azo]naphthalene-2-sulphonic acid structure	Common Name	7-benzamido-4-hydroxy-3-[[4-[(4-sulphophenyl)azo]phenyl]azo]naphthalene-2-sulphonic acid
	CAS Number	25188-42-5	Molecular Weight	631.63600
	Density	1.54g/cm3	Boiling Point	N/A
	Molecular Formula	C₂₉H₂₁N₅O₈S₂	Melting Point	N/A
	MSDS	N/A	Flash Point	N/A

Name	(3Z)-7-benzamido-4-oxo-3-[[4-[(4-sulfophenyl)diazenyl]phenyl]hydrazinylidene]naphthalene-2-sulfonic acid
Synonym	More Synonyms

Density	1.54g/cm3
Molecular Formula	C₂₉H₂₁N₅O₈S₂
Molecular Weight	631.63600
Exact Mass	631.08300
PSA	220.78000
LogP	7.80170
Index of Refraction	1.72
InChIKey	IGXZMQCLUNTWCC-UHFFFAOYSA-N
SMILES	O=C(Nc1ccc2c(O)c(N=Nc3ccc(N=Nc4ccc(S(=O)(=O)O)cc4)cc3)c(S(=O)(=O)O)cc2c1)c1ccccc1

7-benzoylamino-4-hydroxy-3-[4-(4-sulfo-phenylazo)-phenylazo]-naphthalene-2-sulfonic acid

7-Benzoylamino-4-hydroxy-3-[4-(4-sulfo-phenylazo)-phenylazo]-naphthalin-2-sulfonsaeure

direct red 81

(Benzol-sulfonsaeure-(1))-(4 azo 1)-benzol-(4 azo 2)-(6-benzamino-naphthol-(1)-sulfonsaeure-(3))

7-benzamido-4-hydroxy-3-({4-[(4-sulfophenyl)azo]phenyl}azo)naphthalene-2-sulfonic acid

7-Benzamido-4-hydroxy-3-((4-((4-sulphophenyl)azo)phenyl)azo)naphthalene-2-sulphonic acid

EINECS 246-727-9

C.I. Direct Red 81

4'-(6-Benzamino-1-hydroxy-3-sulfo-naphthyl-(2)-azo)-azobenzol-sulfonsaeure-(4)

7-(Benzoylamino)-4-hydroxy-3-((4-((4-sulfophenyl)azo)phenyl)azo)-2-naphthalenesulfonic acid

2-Naphthalenesulfonic acid,7-(benzoylamino)-4-hydroxy-3-((4-((4-sulfophenyl)azo)phenyl)azo)

3-[4-(4-Sulfo-phenylazo)-phenylazo]-7-benzamino-4-hydroxy-naphthalin-sulfonsaeure-(2)

Names