C.I. Direct Red 81 disodium salt

HCID 17462CAS 2610-11-9

Basic information

Standard SMILES
O=C(Nc1ccc2c(O)c(N=Nc3ccc(N=Nc4ccc(S(=O)(=O)[O-])cc4)cc3)c(S(=O)(=O)[O-])cc2c1)c1ccccc1.[Na+].[Na+]
InChIKey
UFUQRRYHIHJMPB-UHFFFAOYSA-L
Molecular formula
C29H19N5Na2O8S2
Average molar mass
675.6 g/mol
Monoisotopic mass
675.04704313

Overview

Sirius red 4B is an organic sodium salt resulting from the formal condensation of Sirius red 4B (acid form) with two equivalents of sodium hydroxide. Used as the plasma stain in some trichrome staining methods. It has a role as a fluorochrome, a poison, a histological dye and an environmental contaminant. It contains a Sirius red 4B(2-).

Names & identifiers

Preferred name
C.I. Direct Red 81 disodium salt
IUPAC
disodium;7-benzamido-4-hydroxy-3-[[4-[(4-sulfonatophenyl)diazenyl]phenyl]diazenyl]naphthalene-2-sulfonate
English name
7-(benzoylamino)-4-hydroxy-3-[[4-[(4-sulphophenyl)azo]phenyl]azo]naphthalene-2-sulphonic acid, sodium salt
Molecular formula
C29H19N5Na2O8S2
Molecular weight
675.5994

Names & synonyms

C.I. Direct Red 81 disodium saltDTXSID5041726DTXCID3021726RefChem:1080560DIRECT RED 812610-11-9Chlorantine Fast Red 5BSolaminrot 4BAiredale Red KDC.I. Direct Red 81Sirius Red 4BCalcodur Red 8BL
Show more names
Einecs 280-228-77-(Benzoylamino)-4-hydroxy-3-[[4-[(4-sulfophenyl)azo]phenyl]azo]-2-naphthalenesulfonic acid sodium salt7-(benzoylamino)-4-hydroxy-3-[[4-[(4-sulphophenyl)azo]phenyl]azo]naphthalene-2-sulphonic acid, sodium salt7-(Benzoylamino)-4-hydroxy-3-((4-((4-sulphophenyl)azo)phenyl)azo)naphthalene-2-sulphonic acid, sodium salt2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy- 3-[[4-[(4-sulfophenyl)azo]phenyl]azo]-, sodium salt
Triantine Light Red 4BNCHLORANTINEFASTRED5BDirect Fast Red 5BBordeaux EMBLSaturn Red BSolar Red BDurazol Red 2BDurazol Red 2BP

Database identifiers

CAS
2610-11-9、83221-50-5
PubChem CID
17462
DTXSID
DTXSID5041726
ChEMBL
CHEMBL3182005
ChEBI
CHEBI:88191
UNII
7E49Q56PNB
EC Number
280-228-7
Nikkaji
J1.341.158A

Properties

Computed structural properties

Topological polar surface area
230 Ų
Hydrogen bond donors
2
Hydrogen bond acceptors
12
Rotatable bonds
6
Heavy atoms
46

Experimental & physicochemical properties

CosmeticsHair dyeing

Chemistry & industry

Uses & manufacturing

Use ClassificationCosmetics -> Hair dyeing
Additional notes · 1 item

DefinitionChEBI: Sirius red 4B is an organic sodium salt resulting from the formal condensation of Sirius red 4B (acid form) with two equivalents of sodium hydroxide. Used as the plasma stain in some trichrome staining methods. It has a role as a histological dye, a fluorochrome, an environmental contaminant and a poison. It contains a Sirius red 4B(2-).

Related reactions

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