C.I. Disperse Yellow 23

C.I. Disperse Yellow 23 structural formula

CAS Number6250-23-3
Molecular FormulaC18H14N4O
Molecular Weight302.338
  • C.I. Disperse Yellow 23
  • 4-{[4-(Phenyldiazenyl)phenyl]diazenyl}phenol
  • Phenol, 4-[2-[4-(2-phenyldiazenyl)phenyl]diazenyl]-
  • 6250-23-3
  • Acetoquinone Light Yellow 3RLLZ
  • Artisil Yellow RGFL
  • Calcophen Yellow 4RL
  • Celliton Fast Yellow 4RL-CF
  • Cibacet Yellow 2RG
  • Dianix Yellow 5R
  • Disperse Yellow 23
  • EINECS 228-370-0
  • Esteroquinone Light Yellow 3RLL
  • Fenacet Fast Yellow 4R
  • Foron Yellow RGFL
  • Foron Yellow RGFL ultra-dispersed
  • p-Hydroxy-p-bis azobenzene
  • Latyl Yellow 4RL
  • NSC 45565
  • Nyloquinone Yellow 3R
  • Phenol, p-((p-(phenylazo)phenyl)azo)-
  • Setacyl Yellow P-3RL
  • Setacyl Yellow 3RN
  • SRA Fast Golden Yellow XIII
  • Terasil Yellow 2RG
  • 154213-95-3


Separation of C.I. Disperse Yellow 23 on Newcrom R1 HPLC column

February 16, 2018
Separation of C.I. Disperse Yellow 23 on Newcrom C18 HPLC column

C.I. Disperse Yellow 23 can be analyzed by this reverse phase (RP) HPLC method with simple conditions. The mobile phase contains an acetonitrile (MeCN), water, and phosphoric acid. For Mass-Spec (MS) compatible applications the phosphoric acid needs to be replaced with formic acid. Smaller 3 µm particles columns available for fast UPLC applications. This liquid chromatography method is scalable and can be used for isolation impurities in preparative separation. It also suitable for pharmacokinetics.

Application Column

Newcrom R1

The Newcrom columns are a family of reverse-phase-based columns. Newcrom A, AH, B, and BH are all mixed-mode columns with either positive or negative ion-pairing groups attached to either short (25 Å) or long (100 Å) ligand chains. Newcrom R1 is a special reverse-phase column with low silanol activity.

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Application Analytes:
C.I. Disperse Yellow 23
The result was obtained by a proprietary SIELC algorithm. It may deviate from the actual experimental data. The experimental data are available upon request. Contact us by e-mail: support@sielc.com or by phone: 847-229-2629.