C.I. Direct Blue 78, tetrasodium salt

C.I. Direct Blue 78, tetrasodium salt structural formula

CAS Number2503-73-3
Molecular FormulaC42H25N7Na4O13S4
Molecular Weight1055.901
InChI KeyMIJVKZQQSWANSK-BKTMREPHSA-J
LogP4.00
Synonyms
  • C.I. Direct Blue 78, tetrasodium salt
  • Tetrasodium 2-[(E)-{4-[(E)-{4-[(E)-(7-anilino-2-hydroxy-3-sulfonatonaphthalen-1-yl)diazenyl]naphthalen-1-yl}diazenyl]-6-sulfonatonaphthalen-1-yl}diazenyl]benzene-1,4-disulfonate
  • 1,4-Benzenedisulfonic acid, 2-[(E)-2-[4-[(E)-2-[4-[(E)-2-[2-hydroxy-7-(phenylamino)-3-sulfo-1-naphthalenyl]diazenyl]-1-naphthalenyl]diazenyl]-6-sulfo-1-naphthalenyl]diazenyl]-, sodium salt (1:4)
  • 2503-73-3
  • EINECS 219-708-8
  • Ismafast Blue 4GL
  • 47909-69-3

Applications:

Separation of C.I. Direct Blue 78, tetrasodium salt on Newcrom R1 HPLC column

February 16, 2018
Separation of C.I. Direct Blue 78, tetrasodium salt on Newcrom C18 HPLC column

C.I. Direct Blue 78, tetrasodium 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 Blue 78, tetrasodium 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 by e-mail: support@sielc.com or by phone: 847-229-2629.