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Substance Name: Pigment Red 251
RN: 74336-60-0
InChIKey: OOWAWKKKXJSMTD-QVIHXGFCSA-N

Classification Code

  • TSCA Flag P (a Commenced PMN (Premanufacture Notice) Substance)

Molecular Formula

  • C25-H13-Cl2-N5-O3

Molecular Weight

  • 502.316
 
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Names and Synonyms

Name of Substance

  • Pigment Red 251

Synonyms

  • C.I. 12925
  • EINECS 277-824-4
  • Paliotol Red L 3550HD

Systematic Names

  • 1-((5,7-Dichloro-1,9-dihydro-2-methyl-9-oxopyrazolo(5,1-b)quinazolin-3-yl)azo)anthraquinone
  • 9,10-Anthracenedione, 1-((5,7-dichloro-1,9-dihydro-2-methyl-9-oxopyrazolo(5,1-b)quinazolin-3-yl)azo)-
  • 9,10-Anthracenedione, 1-(2-(5,7-dichloro-1,9-dihydro-2-methyl-9-oxopyrazolo(5,1-b)quinazolin-3-yl)diazenyl)-

Registry Numbers

CAS Registry Number

  • 74336-60-0

System Generated Number

  • 0074336600

Structure Descriptors

InChI

1S/C25H13Cl2N5O3/c1-11-20(24-28-21-16(25(35)32(24)31-11)9-12(26)10-17(21)27)30-29-18-8-4-7-15-19(18)23(34)14-6-3-2-5-13(14)22(15)33/h2-10,31H,1H3/b30-29+

InChIKey

OOWAWKKKXJSMTD-QVIHXGFCSA-N

Smiles

c1(cccc2C(c3ccccc3C(c12)=O)=O)\N=N\c1c([nH]n2c1nc1c(cc(cc1c2=O)Cl)Cl)C