Scarlet Red

Scarlet Red

Drug Nomenclature

Date of monograph revision: 09-Mar-1998; 24-Sep-1998; 01-Mar-2001; 16-Nov-2001; 14-Jun-2004; 30-May-2006; (last modified: 07-Jun-2006)
Synonyms: Biebrich Scarlet R Medicinal; CI Solvent Red 24; Colour Index No. 26105; Fat Ponceau R; Rojo escarlata; Rubrum Scarlatinum; Scarlet Red; Scharlachrot; Sudan IV
Chemical name: 1-[4-(o-Tolylazo)-o-tolylazo]naphth-2-ol
Molecular formula: C24H20N4O =380.4
CAS: 85-83-6
Chemical Structure of Scarlet Red

Chemical Structure of Scarlet Red

Drug Profile

Scarlet red is an antiseptic dye that has been used topically. It can be irritant. Scarlet red is not permitted as a food colour in the EU, as it is thought to be a genotoxic carcinogen.

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