SHEET /m/ponceau-4r · PubChem CID 17466 · CAS 2611-82-7 · REV 2026.07
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Ponceau 4R from source
C20H11N2Na3O10S3 · 604.5 g/mol
C.I. Acid Red 18, Trisodium Salt · New coccine · Acid red 18 · C.I. Acid Red 18
chemical compound, food colourant
CategoryFood & flavor
Chemical familyAromatics
LeaderboardsBiggest
Fig. 1 · 2D structure RDKit
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+]
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