2,7-Naphthalenedisulfonic acid, 5-amino-3-[2-[4′-[2-(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)diazenyl][1,1′-biphenyl]-4-yl]diazenyl]-4-hydroxy-, sodium salt (1:3)
CAS Registry Number®
2429-73-4
CAS Name
2,7-Naphthalenedisulfonic acid, 5-amino-3-[2-[4′-[2-(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)diazenyl][1,1′-biphenyl]-4-yl]diazenyl]-4-hydroxy-, sodium salt (1:3)Molecular Formula
C32H24N6O11S3.3NaCite this Page
2,7-Naphthalenedisulfonic acid, 5-amino-3-[2-[4′-[2-(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)diazenyl][1,1′-biphenyl]-4-yl]diazenyl]-4-hydroxy-, sodium salt (1:3). CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. http://commonchemistry.cas.org/detail?cas_rn=2429-73-4 (retrieved ) (CAS RN: 2429-73-4). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).Other Names and Identifiers
InChI
InChI=1S/C32H24N6O11S3.3Na/c33-20-6-1-18-12-26(51(44,45)46)29(31(39)24(18)14-20)37-35-21-7-2-16(3-8-21)17-4-9-22(10-5-17)36-38-30-27(52(47,48)49)13-19-11-23(50(41,42)43)15-25(34)28(19)32(30)40;;;/h1-15,39-40H,33-34H2,(H,41,42,43)(H,44,45,46)(H,47,48,49);;;
InChIKey
InChIKey=ISKHIWSUDPZKOU-UHFFFAOYSA-N
SMILES
OC=1C2=C(C=C(S(=O)(=O)O)C1N=NC3=CC=C(C=C3)C4=CC=C(N=NC=5C(S(=O)(=O)O)=CC6=C(C5O)C=C(N)C=C6)C=C4)C=C(S(=O)(=O)O)C=C2N.[Na]
Canonical SMILES
[Na].O=S(=O)(O)C1=CC(N)=C2C(O)=C(N=NC3=CC=C(C=C3)C4=CC=C(N=NC=5C(O)=C6C=C(N)C=CC6=CC5S(=O)(=O)O)C=C4)C(=CC2=C1)S(=O)(=O)O
Other Names for this Substance
- 2,7-Naphthalenedisulfonic acid, 5-amino-3-[2-[4′-[2-(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)diazenyl][1,1′-biphenyl]-4-yl]diazenyl]-4-hydroxy-, sodium salt (1:3)
- C.I. Direct Blue 2, trisodium salt
- Direct Diazo Black S
- C.I. Direct Blue 2
- 2,7-Naphthalenedisulfonic acid, 5-amino-3-[[4′-[(7-amino-1-hydroxy-3-sulfo-2-naphthalenyl)azo][1,1′-biphenyl]-4-yl]azo]-4-hydroxy-, trisodium salt
Deleted or Replaced CAS Registry Numbers
52350-22-8
