Compound Q&A

What is Sudan II (CAS: 3118-97-6)?

Answer

Sudan II
Sudan II, with the CAS number 3118-97-6, is a synthetic triarylmethane dye known for its red color. It has the chemical formula C20H16N2O2S2 and is commonly used as a coloring agent. Sudan II is soluble in organic solvents and exhibits good stability under normal conditions. Its structure includes three aromatic rings connected via a methine bridge, contributing to its vibrant hue and chemical properties.

About

CAS No 3118-97-6
English Name Sudan II
Molecular Formula C18H16N2O
Molecular Weight 276.33 g/mol
SMILES Cc1ccc(c(c1)C)N/N=C\1/C(=O)C=Cc2c1cccc2
InChIKey YPXOPAFVVHXQDP-CZIZESTLSA-N
Last Updated: 2025-08-25 01:07

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