1,5-Naphthalenedisulfonic acid, 3-[2-[4-[2-[4-[2-[1-hydroxy-7-[2-(2-hydroxy-6-sulfo-1-naphthalenyl)diazenyl]-3-sulfo-2-naphthalenyl]diazenyl]-6-sulfo-1-naphthalenyl]diazenyl]-1-naphthalenyl]diazenyl]-, sodium salt (1:5)

CAS Registry Number®

2679-49-4

CAS Name

1,5-Naphthalenedisulfonic acid, 3-[2-[4-[2-[4-[2-[1-hydroxy-7-[2-(2-hydroxy-6-sulfo-1-naphthalenyl)diazenyl]-3-sulfo-2-naphthalenyl]diazenyl]-6-sulfo-1-naphthalenyl]diazenyl]-1-naphthalenyl]diazenyl]-, sodium salt (1:5)

Molecular Formula

C50H32N8O17S5.5Na

Cite this Page

1,5-Naphthalenedisulfonic acid, 3-[2-[4-[2-[4-[2-[1-hydroxy-7-[2-(2-hydroxy-6-sulfo-1-naphthalenyl)diazenyl]-3-sulfo-2-naphthalenyl]diazenyl]-6-sulfo-1-naphthalenyl]diazenyl]-1-naphthalenyl]diazenyl]-, sodium salt (1:5).   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=2679-49-4 (retrieved 2024-12-23) (CAS RN: 2679-49-4).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Other Names and Identifiers

InChI

InChI=1S/C50H32N8O17S5.5Na/c59-44-19-9-26-20-30(76(61,62)63)11-13-32(26)48(44)57-51-28-10-8-27-21-47(80(73,74)75)49(50(60)37(27)22-28)58-56-43-18-17-42(35-14-12-31(25-38(35)43)77(64,65)66)55-54-41-16-15-40(33-4-1-2-5-34(33)41)53-52-29-23-39-36(46(24-29)79(70,71)72)6-3-7-45(39)78(67,68)69;;;;;/h1-25,59-60H,(H,61,62,63)(H,64,65,66)(H,67,68,69)(H,70,71,72)(H,73,74,75);;;;;

InChIKey

InChIKey=NCNYBTVLPZCQFJ-UHFFFAOYSA-N

SMILES

N(=NC=1C(S(=O)(=O)O)=CC2=C(C1O)C=C(N=NC=3C4=C(C=C(S(=O)(=O)O)C=C4)C=CC3O)C=C2)C=5C6=C(C(N=NC=7C8=C(C(N=NC9=CC%10=C(C(S(=O)(=O)O)=C9)C=CC=C%10S(=O)(=O)O)=CC7)C=CC=C8)=CC5)C=CC(S(=O)(=O)O)=C6.[Na]

Canonical SMILES

[Na].O=S(=O)(O)C1=CC=C2C(C=CC(O)=C2N=NC=3C=CC4=CC(=C(N=NC5=CC=C(N=NC6=CC=C(N=NC=7C=C8C(C=CC=C8S(=O)(=O)O)=C(C7)S(=O)(=O)O)C=9C=CC=CC69)C=%10C=CC(=CC5%10)S(=O)(=O)O)C(O)=C4C3)S(=O)(=O)O)=C1

Other Names for this Substance

  • 1,5-Naphthalenedisulfonic acid, 3-[2-[4-[2-[4-[2-[1-hydroxy-7-[2-(2-hydroxy-6-sulfo-1-naphthalenyl)diazenyl]-3-sulfo-2-naphthalenyl]diazenyl]-6-sulfo-1-naphthalenyl]diazenyl]-1-naphthalenyl]diazenyl]-, sodium salt (1:5)
  • C.I. Direct Black 75, pentasodium salt
  • C.I. Direct Black 75
  • 1,5-Naphthalenedisulfonic acid, 3-[[4-[[4-[[1-hydroxy-7-[(2-hydroxy-6-sulfo-1-naphthalenyl)azo]-3-sulfo-2-naphthalenyl]azo]-6-sulfo-1-naphthalenyl]azo]-1-naphthalenyl]azo]-, pentasodium salt
  • C.I. 35870

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CAS INSIGHTSTM
Pile of blue, green, and white color of capsule pills with modern design light.