CAS: 6739-62-4 - Direct Black 91

Formula: C₃₈H₂₅N₈Na₃O₁₃S

InChI: InChI=1S/C38H28N8O13S.3Na/c1-58-31-13-18(3-9-28(31)42-40-20-5-12-30(47)25(15-20)38(51)52)19-4-10-29(32(14-19)59-2)43-45-35-33(60(55,56)57)17-23-22(36(35)48)7-8-26(39)34(23)44-41-27-11-6-21(46(53)54)16-24(27)37(49)50;;;/h3-17,47-48H,39H2,1-2H3,(H,49,50)(H,51,52)(H,55,56,57);;;

InChI key: InChIKey=HAFAULQWRNLKJW-UHFFFAOYSA-N

SMILES: [Na].O=C(O)C1=CC(N=NC2=CC=C(C=C2OC)C3=CC=C(N=NC=4C(O)=C5C=CC(N)=C(N=NC6=CC=C(C=C6C(=O)O)N(=O)=O)C5=CC4S(=O)(=O)O)C(OC)=C3)=CC=C1O

Synonyms:

• Benzo Cuprol Black RLW
• Benzoic acid, 2-(2-(2-amino-6-(2-(4'-(2-(3-carboxy-4-hydroxyphenyl)diazenyl)-3,3'-dimethoxy(1,1'-biphenyl)-4-yl)diazenyl)-5-hydroxy-7-sulfo-1-naphthalenyl)diazenyl)-5-nitro-, sodium salt (1:3)
• Benzoic acid, 2-[[2-amino-6-[[4′-[(3-carboxy-4-hydroxyphenyl)azo]-3,3′-dimethoxy[1,1′-biphenyl]-4-yl]azo]-5-hydroxy-7-sulfo-1-naphthalenyl]azo]-5-nitro-, trisodium salt
• Cuprophenyl Black RL
• Trisodium 2-[[2-Amino-6-[4-[4-(3-Carboxylato-4-Hydroxy-Phenyl)Azo-3-Methoxy-Phenyl]-2-Methoxy-Phenyl]Azo-5-Hydroxy-7-Sulfonato-1-Naphthyl]Azo]-5-Nitro-Benzoate
• trisodium 2-{(E)-[(6E)-2-amino-6-(2-{4'-[(2Z)-2-(3-carboxylato-4-oxocyclohexa-2,5-dien-1-ylidene)hydrazinyl]-3,3'-dimethoxybiphenyl-4-yl}hydrazinylidene)-5-oxo-7-sulfonato-5,6-dihydronaphthalen-1-yl]diazenyl}-5-nitrobenzoate

Direct black 91

CAS: 25255-00-9 6739-62-4

• Formula: C₃₈H₂₅N₈Na₃O₁₃S
• Molecular weight: 902.69

Direct black 91

CAS: 6739-62-4

Direct black 91 is a diazo dye that is used as a pigment in inks, …

• Formula: C₃₈H₂₅N₈Na₃O₁₃S
• Purity: Min. 95%
• Color and Shape: Solid
• Molecular weight: 902.69 g/mol