CGO

sodium 3,3'-(1E,1'E)-biphenyl-4,4'-diylbis(diazene-2,1-diyl)bis(4-aminonaphthalene-1-sulfonate)

Created:	2011-04-21
Last modified:	2026-05-19

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4 entries where CGO is found as a standalone ligand

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Chemical Details
Formal Charge	0
Atom Count	70
Chiral Atom Count	0
Bond Count	75
Aromatic Bond Count	34

2D diagram of CGO

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Chemical Component Summary
Name	sodium 3,3'-(1E,1'E)-biphenyl-4,4'-diylbis(diazene-2,1-diyl)bis(4-aminonaphthalene-1-sulfonate)
Synonyms	congo red
Systematic Name (OpenEye OEToolkits)	n/a
Formula	C₃₂ H₂₂ N₆ Na₂ O₆ S₂
Molecular Weight	696.663
Type	NON-POLYMER

Chemical Descriptors
Type	Program	Version	Descriptor
SMILES	ACDLabs	14.52	[Na+][O-]S(=O)(=O)c1cc(/N=N/c2ccc(cc2)c2ccc(cc2)/N=N/c2cc(c3ccccc3c2N)S(=O)(=O)[O-][Na+])c(N)c2ccccc12
SMILES	CACTVS	3.385	Nc1c(cc(c2ccccc12)[S](=O)(=O)[O-][Na+])N=Nc3ccc(cc3)c4ccc(cc4)N=Nc5cc(c6ccccc6c5N)[S](=O)(=O)[O-][Na+]
SMILES	OpenEye OEToolkits	3.1.0.0	c1ccc2c(c1)c(cc(c2N)N=Nc3ccc(cc3)c4ccc(cc4)N=Nc5cc(c6ccccc6c5N)S(=O)(=O)[O-][Na+])S(=O)(=O)[O-][Na+]
Canonical SMILES	CACTVS	3.385	Nc1c(cc(c2ccccc12)[S](=O)(=O)[O-][Na+])N=Nc3ccc(cc3)c4ccc(cc4)N=Nc5cc(c6ccccc6c5N)[S](=O)(=O)[O-][Na+]
Canonical SMILES	OpenEye OEToolkits	3.1.0.0	c1cc2c(cc(c(c2cc1)N)/N=N/c3ccc(cc3)c4ccc(cc4)/N=N/c5c(c6c(c(c5)S(=O)(=O)[O-][Na+])cccc6)N)S(=O)(=O)[O-][Na+]
InChI	InChI	1.06	InChI=1S/C32H24N6O6S2.2Na/c33-31-25-7-3-1-5-23(25)29(45(39,40)41)17-27(31)37-35-21-13-9-19(10-14-21)20-11-15-22(16-12-20)36-38-28-18-30(46(42,43)44)24-6-2-4-8-26(24)32(28)34;;/h1-18H,33-34H2,(H,39,40,41)(H,42,43,44);;/q;2*+1/p-2/b37-35+,38-36+;;
InChIKey	InChI	1.06	IQFVPQOLBLOTPF-HKXUKFGYSA-L

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