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Substance Name: Pigment red 22
RN: 6448-95-9
UNII: 81W2C75HEQ
InChIKey: XYZMEPHFXJHGIX-CYYJNZCTSA-N

Note

  • Organic dye used in red tattoos.

Molecular Formula

  • C24-H18-N4-O4

Molecular Weight

  • 426.43
 
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Names and Synonyms

Name of Substance

  • Pigment red 22

Synonyms

  • 3-Hydroxy-4-((5-nitro-o-tolyl)azo)-2-naphthanilide
  • C.I. Pigment Red 22
  • EC 229-245-3
  • EINECS 229-245-3
  • UNII-81W2C75HEQ

Systematic Names

  • 2-Naphthalenecarboxamide, 3-hydroxy-4-((2-methyl-5-nitrophenyl)azo)-N-phenyl-
  • 2-Naphthalenecarboxamide, 3-hydroxy-4-(2-(2-methyl-5-nitrophenyl)diazenyl)-N-phenyl-
  • 3-Hydroxy-4-((2-methyl-5-nitrophenyl)azo)-N-phenylnaphthalene-2-carboxamide

Registry Numbers

CAS Registry Number

  • 6448-95-9

FDA UNII

  • 81W2C75HEQ

Other Registry Numbers

  • 1256701-52-6
  • 253683-89-5
  • 67621-55-0

System Generated Number

  • 0006448959

Structure Descriptors

InChI

1S/C24H18N4O4/c1-15-11-12-18(28(31)32)14-21(15)26-27-22-19-10-6-5-7-16(19)13-20(23(22)29)24(30)25-17-8-3-2-4-9-17/h2-14,29H,1H3,(H,25,30)/b27-26+

InChIKey

XYZMEPHFXJHGIX-CYYJNZCTSA-N

Smiles

O=C(Nc1ccccc1)c1c(O)c(\N=N\c2c(ccc([N+](=O)[O-])c2)C)c2c(cccc2)c1