C.I. Direct Red 81 disodium salt

C.I. Direct Red 81 disodium salt structural formula

CAS Number2610-11-9
Molecular FormulaC29H19N5Na2O8S2
Molecular Weight675.600
InChI KeyUFUQRRYHIHJMPB-UHFFFAOYSA-L
LogP1.92
Synonyms
  • C.I. Direct Red 81 disodium salt
  • Disodium 7-benzamido-4-hydroxy-3-({4-[(4-sulfonatophenyl)diazenyl]phenyl}diazenyl)naphthalene-2-sulfonate
  • 2-Naphthalenesulfonic acid, 7-(benzoylamino)-4-hydroxy-3-[2-[4-[2-(4-sulfophenyl)diazenyl]phenyl]diazenyl]-, sodium salt (1:2)
  • 2610-11-9
  • C.I. Direct Red 81
  • Airedale Red KD
  • Aizen Primula Red 4BH
  • Amanil Fast Red 8BL
  • Amanil Fast Red 8BLW
  • Belamine Fast Red 8BL
  • Belamine Fast Red 8 BL
  • Benzanil Fast Red K
  • Benzo Fast Red 8BL
  • Bordeaux EMBL
  • Calcodur Red 8BL
  • Chloramine Fast Red K
  • Chloramine Fast Red 5BL
  • Chlorantine Fast Red
  • Chlorantine Fast Red 5B
  • Chrome Leather Red 5B
  • Dialuminous Red 4B
  • Diaphtamine Light Red 4B
  • Diazine Fast Red 8BK
  • Diazo Light Red 8B
  • Diazo Light Red 8BD
  • Diazol Light Red 8B
  • Diphenyl Fast 5BL Supra I Red
  • Diphenyl Fast Red 5BL
  • Diphenyl Fast Red 5BLN
  • Direct Fast Red 2S
  • Direct Fast Red 5B
  • Direct Fast Red 8BL
  • Direct Light Red M 8BL
  • Direct Light Red 4B
  • Direct Light Red 8B
  • Direct Lightfast Red 2S
  • Durazol Red 2B
  • Durazol Red 2BP
  • EINECS 220-028-9
  • Eliamina Red 8BL
  • Fastolite Red 8BL
  • Fastusol Red 4BA-CF
  • Fenaluz Red 4B
  • Helion Red 8B
  • Hispaluz Red 8BL
  • Japan Red No. 505
  • NSC 326198
  • Paranol Fast Red 8BL
  • Pheno Fast Scarlet 9B
  • Pontamine Fast Red 8BLX
  • Pryamoi krasnyi svetoprochnyi 2S
  • Pyrazol Fast Red 5BL
  • Pyrazol Fast Red 8BL
  • Pyrazoline Red 8BL
  • Saturn Red B
  • Sirius Red 4B
  • Sirius Red 4BA
  • Solantine Red 8BL
  • Solar Red B
  • Solius Red 4B
  • Sumilight Red 4B
  • Suprazo Red 4B
  • Suprexcel Red 8BL
  • Tertrodirect Fast Red 5B
  • Tetramine Fast Red 8B
  • Triantine Fast Red 4BN
  • Triantine Light Red 4BN
  • UNII-7E49Q56PNB
  • 12237-71-7
  • 134092-10-7

Applications:

Separation of C.I. Direct Red 81 disodium salt on Newcrom R1 HPLC column

February 16, 2018
Separation of C.I. Direct Red 81 disodium salt on Newcrom C18 HPLC column

C.I. Direct Red 81 disodium salt 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. Direct Red 81 disodium salt
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 before ordering the column as there may be a more suitable column alternative by either e-mail: support@sielc.com or by phone: 847-229-2629.