Ponceau S

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CAS NO:	6226-79-5
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Methylthioninium C

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CAS NO:6226-79-5

EC NO:228-319-2

Molecular Formula:C₂₂H₁₂N₄Na₄O₁₃S₄

Molecular Weight:760.5688

Synonyms:C.I. 27195;C.I. Acid Red 112;C.I. Acid Red 112, tetrasodium salt (8CI);Ponceau S;3-Hydroxy-4-[2-sulfo-4-(4-sulfophenylazo)phenylazo]-2,7-naphthalenedisulfonic acid, tetrasodium salt;Ponceau S solution;tetrasodium 3-hydroxy-4-(2-sulphonato-4-(4-sulphonatophenylazo)phenylazo)naphthalene-2,7-disulphonat;Acid red 112;tetrasodium 3-hydroxy-4-[(E)-{2-sulfonato-4-[(E)-(4-sulfonatophenyl)diazenyl]phenyl}diazenyl]naphthalene-2,7-disulfonate;

Molecular Structure: