Xantheno[2,1,9,8-klmna]xanthene CAS 191-28-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 191-28-6 |
| Molecular Formula | C20H32O17 |
| Molecular Weight | 544.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Order Xantheno[2,1,9,8-klmna]xanthene (CAS 191-28-6) pharmaceutical standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C20H32O17. Molecular weight: 544.46 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C20H32O17 |
| Molecular Weight | 544.46 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Recommended Standards
- (2R,3S,4R,5R)-5-(6-Amino-9H-purin-9-yl)-4-hydroxy-2-((phosphonooxy)methyl)tetrahydrofuran-3-yl 5-(dimethylamino)-1-naphthoate (CAS 72947-53-6)
- 3-Amino-N-(2-bromo-4-methylphenyl)-4-(4-methoxyphenyl)-6-phenylthieno[2,3-b]pyridine-2-carboxamide (CAS 332053-69-7)
- (E)-[(5-{[(4-tert-butylphenyl)methyl]sulfanyl}-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)methylidene]amino 2,4-dichlorobenzoate (CAS 318239-34-8)
- 2,4-difluoro-5-methylpyrimidine (CAS 96548-89-9)
- 3,3-Dimethyl-2,3-dihydro-1H-pyrrolo[2,3-c]pyridine (CAS 1823891-04-8)
- 6-Benzyl-1,3,5-triazine-2,4-diamine (CAS 1853-88-9)
- Indolin-6-amine dihydrochloride (CAS 28228-73-1)
- N-(2,4-Difluorophenyl)-2-(dodecylsulfanyl)acetamide (CAS 331461-63-3)
- 4-(Difluoromethyl)cyclohexanamine (CAS 1314939-44-0)
- Acetyl Tripeptide-1 (CAS 350595-76-5)
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