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Ponceau 4R

Catalog Number DYE-AFC-0005
CAS Number 2611-82-7
Structure
Description Ponceau 4R is a strawberry red azo dye used in a variety of foods, usually synthesized from aromatic hydrocarbons; it is stable to light, heat, and acid, but fades in the presence of ascorbic acid
Synonyms C.I.16255, cochineal red A, C.I. acid red 18, brilliant scarlet 3R, brilliant scarlet 4R, new coccine
IUPAC Name Trisodium (8Z)-7-oxo-8-[(4-sulfonatonaphthalen-1-yl)hydrazinylidene]naphthalene-1,3-disulfonate
Molecular Weight 604.46
Molecular Formula C20H11N2Na3O10S3
Canonical SMILES [Na+].[Na+].[Na+].[O-]S(=O)(=O)c4ccc(c3ccccc34)/N=N/c1c2c(ccc1O)cc(S(=O)(=O)[O-])cc2S(=O)(=O)[O-]
InChI 1S/C20H14N2O10S3.3Na/c23-16-7-5-11-9-12(33(24,25)26)10-18(35(30,31)32)19(11)20(16)22-21-15-6-8-17(34(27,28)29)14-4-2-1-3-13(14)15;;;/h1-10,23H,(H,24,25,26)(H,27,28,29)(H,30,31,32);;;/q;3*+1/p-3/b22-21+;;;
InChI Key SWGJCIMEBVHMTA-ZRUFZDNISA-K
CI Number C.I. 16255
E Number E124

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