Undecyl 9-(dicyanomethylene)-2,7-dinitro-9H-fluorene-4-carboxylate CAS 139542-68-0
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 139542-68-0 |
| Molecular Formula | C28H28N4O6 |
| Molecular Weight | 516.55 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Undecyl 9-(dicyanomethylene)-2,7-dinitro-9H-fluorene-4-carboxylate (CAS 139542-68-0) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C28H28N4O6. Molecular weight: 516.55 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C28H28N4O6 |
| Molecular Weight | 516.55 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 4 |
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Recommended Standards
- ditert-butyl [2,2-dimethyl-4-(6-sulfanylidene-3H-purin-9-yl)-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-6-yl]methyl phosphate (CAS 1375103-71-1)
- Azilsartan Impurity N3 (CAS 147404-82-8)
- Vat Green 1 (CAS 128-58-5)
- Docosanenitrile (CAS 49562-27-8)
- (S)-2-[(Fmoc-amino)methyl]-3-methylbutanoic Acid (CAS 203854-59-5)
- 1-{[3-(trifluoromethyl)phenyl]methyl}-1h-1,3-benzodiazol-2-amine (CAS 1038711-02-2)
- 2-Bromo-3-(bromomethyl)-6-(difluoromethyl)-4-methylpyridine (CAS 1804459-53-7)
- 2-(Bicyclo[2.2.1]heptan-2-yl)ethanethioamide (CAS 1559001-42-1)
- 1-(2,7-Diazaspiro[4.4]Nonan-2-yl)ethan-1-one hydrochloride (CAS 1808808-99-2)
- Cholecystokinin Octapeptide (1-5) (desulfated) (CAS 121880-96-4)
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