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Chemical structure of Ponceau 4R (Acid Red 18)

GC30345

Ponceau 4R (Acid Red 18)

Also known as trisodium;7-hydroxy-8-[(4-sulfonatonaphthalen-1-yl)diazenyl]naphthalene-1,3-disulfonate

Ponceau 4R (Acid Red 18) is a synthetic colorant used as a food colorant

ChemicalCAS2611-82-7MW604.47FormulaC20H11N2Na3O10S3
CAS number
2611-82-7
Molecular weight
604.47
Formula
C20H11N2Na3O10S3
Solubility
Water ： ≥ 100 mg/mL (165·43 mM)
InChIKey
SWGJCIMEBVHMTA-UHFFFAOYSA-K
Catalogue number
GC30345
Brand
GLPBIO
Computed properties PubChem CID 17466 · TPSA 242 Ų · H-bond donors 1 · H-bond acceptors 12
TPSA
242 Ų
H-bond donors
1
H-bond acceptors
12
Rotatable bonds
2
Heavy atoms
38

SMILES C1=CC=C2C(=C1)C(=CC=C2S(=O)(=O)[O-])N=NC3=C(C=CC4=CC(=CC(=C43)S(=O)(=O)[O-])S(=O)(=O)[O-])O.[Na+].[Na+].[Na+]

Computed descriptors from PubChem (CID 17466), public domain. Identity cross-checked against the supplier's molecular formula and weight — verify before use.

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