Direct black 91 CAS 6739-62-4
Purity >95%In StockPharmaceutical Standards
| CAS No. | 6739-62-4 |
| Molecular Formula | C38H25N8O13S 3*Na |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Direct black 91 (CAS 6739-62-4) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C38H25N8O13S 3*Na. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C38H25N8O13S 3*Na |
| Molecular Weight | 856.71 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 30.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 8 |
| Sulfur Atoms | 1 |
Related Direct Standards
Recommended Standards
- 6-(Dimethylamino)-5-methylnicotinaldehyde (CAS 1289107-23-8)
- 2,4-Dibromothiophene (CAS 3140-92-9)
- tert-Butyl 2-((2-aminoacetamido)methyl)piperidine-1-carboxylate (CAS 1353953-93-1)
- 1,3-Diethyl-1,5,6,7-tetrahydroindazol-4-one (CAS 36767-45-0)
- (R)-1-(1-(1-(Tert-butoxycarbonyl)piperidin-4-yl)ethyl)-2-methyl-1H-indole-3-carboxylic acid (CAS 1659300-60-3)
- 2-Bromo-3-(4,4-difluoropiperidin-1-yl)pyridine (CAS 1707581-05-2)
- Adrenal Peptide E, bovine (CAS 78355-50-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com