3,3-Difluoro-5-methylindolin-2-one CAS 221665-90-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 221665-90-3 |
| Molecular Formula | C9H7F2NO |
| Molecular Weight | 183.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,3-Difluoro-5-methylindolin-2-one (CAS 221665-90-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C9H7F2NO. Molecular weight: 183.15 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C9H7F2NO |
| Molecular Weight | 183.15 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2020 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
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- 6,7-Difluoro-1,2,3,4-tetrahydroquinolin-4-one (CAS 114417-39-9)
- 2-(3,6-Difluoro-2-methoxyphenyl)acetonitrile (CAS 1261760-73-9)
- 6,7-Difluoro-3,4-dihydroquinolin-2(1H)-one (CAS 132669-27-3)
- 5,7-difluoro-1,2,3,4-tetrahydroisoquinolin-1-one (CAS 1340410-20-9)
- 6,7-Difluoro-3,4-dihydroisoquinolin-1(2H)-one (CAS 1352393-61-3)
- 6,8-Difluoro-3,4-dihydroisoquinolin-1(2H)-one (CAS 1352398-60-7)
- 2-(3,4-Difluoro-2-methoxyphenyl)acetonitrile (CAS 1784393-80-1)
- 3,3-Difluoro-7-methylindolin-2-one (CAS 197067-37-1)
Recommended Standards
- 3-(3,5-Difluorophenoxy)propanenitrile (CAS 844648-16-4)
- 4-(1,1-Difluoro-2-hydroxyethyl)benzonitrile (CAS 2082663-46-3)
- 3-(3,4-Difluorophenoxy)propanenitrile (CAS 950644-34-5)
- N-[2-(5-Mercapto-4-methyl-4H-[1,2,4]triazol-3-yl)-ethyl]-4-methoxy-benzamide (CAS 792944-51-5)
- 2-(Benzyloxy)-6-methoxybenzonitrile (CAS 167832-66-8)
- 2-{3-[(4-Fluorobenzyl)oxy]benzoyl}-N-isopropyl-1-hydrazinecarboxamide (CAS 866009-88-3)
- 3-(4-Methyl-3-phenyl-1,4-dihydrocyclopenta[b]indol-2-yl)propanenitrile (CAS 828937-88-8)
- Ethyl 4-fluorobenzenesulfonate (CAS 2924-72-3)
- 2-methoxy-7-azaspiro[3.5]nonane;hydrochloride (CAS 2306270-77-7)
- Semaglutide impurity 206 (CAS CATO-C4X-2226206)
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