Ponceau 3R

**Semantic type:** Indicator, Reagent, or Diagnostic Aid|Organic Chemical

**Synonyms:** - 2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-((2,4,5-trimethylphenyl)azo)-, Disodium Salt - AF Red No. 1 - C.I. 16155 - D and C Red 15 - Disodium 3-hydroxy-4-((2,4,5-trimethylphenyl)azo)-2,7-naphthalenedisulfonate - Disodium 3-hydroxy-4-((2,4,5-trimethylphenyl)azo)-2,7-naphthalenedisulphonate - FDC Red 1 - Maple Ponceau 3R - Maple Ponceau SX - PONCEAU 3R - Ponceau RN - Usacert Red No. 1