Direct Black 38

CAS Registry Number®

1937-37-7

CAS Name

Direct Black 38

Molecular Formula

C34H27N9O7S2.2Na

Molecular Mass

783.75

Cite this Page

Direct Black 38.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=1937-37-7 (retrieved 2025-04-21) (CAS RN: 1937-37-7).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Other Names and Identifiers

InChI

InChI=1S/C34H27N9O7S2.2Na/c35-22-10-15-27(26(36)18-22)41-38-24-11-6-19(7-12-24)20-8-13-25(14-9-20)40-42-32-28(51(45,46)47)16-21-17-29(52(48,49)50)33(34(44)30(21)31(32)37)43-39-23-4-2-1-3-5-23;;/h1-18,44H,35-37H2,(H,45,46,47)(H,48,49,50);;

InChIKey

InChIKey=BPSJKGMNBUOTKY-UHFFFAOYSA-N

SMILES

NC=1C2=C(C=C(S(=O)(=O)O)C1N=NC3=CC=C(C=C3)C4=CC=C(N=NC5=C(N)C=C(N)C=C5)C=C4)C=C(S(=O)(=O)O)C(N=NC6=CC=CC=C6)=C2O.[Na]

Canonical SMILES

[Na].O=S(=O)(O)C1=CC2=CC(=C(N=NC3=CC=C(C=C3)C=4C=CC(N=NC5=CC=C(N)C=C5N)=CC4)C(N)=C2C(O)=C1N=NC=6C=CC=CC6)S(=O)(=O)O

Other Names for this Substance

  • 2,7-Naphthalenedisulfonic acid, 4-amino-3-[2-[4′-[2-(2,4-diaminophenyl)diazenyl][1,1′-biphenyl]-4-yl]diazenyl]-5-hydroxy-6-(2-phenyldiazenyl)-, sodium salt (1:2)
  • C.I. Direct Black 38, disodium salt
  • 2,7-Naphthalenedisulfonic acid, 4-amino-3-[[4′-[(2,4-diaminophenyl)azo][1,1′-biphenyl]-4-yl]azo]-5-hydroxy-6-(phenylazo)-, disodium salt
  • C.I. Direct Black 38
  • Chlorazol Black E

View All

Deleted or Replaced CAS Registry Numbers

61701-15-3, 220970-37-6

CAS INSIGHTSTM
Illustration of microRNA (ribonucleic acid) molecules. MicroRNAs