4,4'-Bis[(4-Hydroxyphenyl)Azo]Stilbene-2,2'-Disulphonic Acid
![iso certificate](/_next/image?url=%2Fimages%2Fcertificates%2Fiso.png&w=256&q=75)
Get a Quick Quote Now
Select Packaging
![](/_next/image?url=%2Fimages%2Fproduct-page%2Fheader_polygon.png&w=96&q=75)
Product Description
Product
4,4'-Bis[(4-Hydroxyphenyl)Azo]Stilbene-2,2'-Disulphonic Acid
CAS
91-34-9
Formula
C26H20N4O8S2
Synonym
4,4'-bis[(4-hydroxyphenyl)azo]stilbene-2,2'-disulphonic acid; 4,4''-Vinylenebis(4'-hydroxyazobenzene-3-sulfonic acid); Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis(5-((4-hydroxyphenyl)azo)-; Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis(5-(2-(4-hydroxyphenyl)diazenyl)-; C.I. Direct Yellow 4; CCRIS 771; Direct Yellow 4 dye; EINECS 202-062-6; UNII-35KMX2FK8K; 2,2'-(1,2-Ethenediyl)bis[5-(4-hydroxyphenylazo)benzenesulfonic acid]; 3051-11-4 (Di-hydrochloride salt); 4,4'-Bis((4-hydroxyphenyl)azo)stilbene-2,2'-disulphonic acid; 4,4'-Bis(4-hydroxyphenylazo)stilbene-2,2'-disulfonic acid; 4,4'-Bis(p-hydroxyphenylazo)-2,2'-stilbenedisulfonic acid; 4,4'-Bis[(4-hydroxyphenyl)azo]-2,2'-stilbenedisulfonic acid
Typical Product Specifications
Molecular weight
580.59
EINECS
202-062-6
SMILES
c1(\C=C/c2c(S(=O)(=O)O)cc(cc2)\N=N\c2ccc(O)cc2)c(S(=O)(=O)O)cc(\N=N\c2ccc(O)cc2)cc1
InChI
HNJRBCJUHORNHV-MIPHBFJZSA-N
InChIKey
1S/C26H20N4O8S2/c31-23-11-7-19(8-12-23)27-29-21-5-3-17(25(15-21)39(33,34)35)1-2-18-4-6-22(16-26(18)40(36,37)38)30-28-20-9-13-24(32)14-10-20/h1-16,31-32H,(H,33,34,35)(H,36,37,38)/b2-1?,29-27+,30-28+
Class
4,4'-Bis[(4-Hydroxyphenyl)Azo]Stilbene-2,2'-Disulphonic Acid
![iso certificate](/_next/image?url=%2Fimages%2Fcertificates%2Fiso.png&w=256&q=75)
Product Description
Product
4,4'-Bis[(4-Hydroxyphenyl)Azo]Stilbene-2,2'-Disulphonic Acid
CAS
91-34-9
Formula
C26H20N4O8S2
Synonym
4,4'-bis[(4-hydroxyphenyl)azo]stilbene-2,2'-disulphonic acid; 4,4''-Vinylenebis(4'-hydroxyazobenzene-3-sulfonic acid); Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis(5-((4-hydroxyphenyl)azo)-; Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis(5-(2-(4-hydroxyphenyl)diazenyl)-; C.I. Direct Yellow 4; CCRIS 771; Direct Yellow 4 dye; EINECS 202-062-6; UNII-35KMX2FK8K; 2,2'-(1,2-Ethenediyl)bis[5-(4-hydroxyphenylazo)benzenesulfonic acid]; 3051-11-4 (Di-hydrochloride salt); 4,4'-Bis((4-hydroxyphenyl)azo)stilbene-2,2'-disulphonic acid; 4,4'-Bis(4-hydroxyphenylazo)stilbene-2,2'-disulfonic acid; 4,4'-Bis(p-hydroxyphenylazo)-2,2'-stilbenedisulfonic acid; 4,4'-Bis[(4-hydroxyphenyl)azo]-2,2'-stilbenedisulfonic acid
Typical Product Specifications
Molecular weight
580.59
EINECS
202-062-6
SMILES
c1(\C=C/c2c(S(=O)(=O)O)cc(cc2)\N=N\c2ccc(O)cc2)c(S(=O)(=O)O)cc(\N=N\c2ccc(O)cc2)cc1
InChI
HNJRBCJUHORNHV-MIPHBFJZSA-N
InChIKey
1S/C26H20N4O8S2/c31-23-11-7-19(8-12-23)27-29-21-5-3-17(25(15-21)39(33,34)35)1-2-18-4-6-22(16-26(18)40(36,37)38)30-28-20-9-13-24(32)14-10-20/h1-16,31-32H,(H,33,34,35)(H,36,37,38)/b2-1?,29-27+,30-28+
Class