2-(Dimethylamino)-9H-fluoren-9-one CAS 18158-43-5
| CAS No. | 18158-43-5 |
| Molecular Formula | C18H12F3NO3 |
| Molecular Weight | 347.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
2-(Dimethylamino)-9H-fluoren-9-one (CAS 18158-43-5), molecular formula C18H12F3NO3 and molecular weight 347.29 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, 2-(Dimethylamino)-9H-fluoren-9-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 347.29 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C18H12F3NO3 |
| Molecular Weight | 347.29 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
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- (5-Phenylisoxazol-3-yl)methyl 3-(trifluoromethyl)benzoate (CAS 343374-56-1)
- 4-Methylindole-3-acetic Acid (CAS 52531-22-3)
- 1-(2-Bromo-1-(sec-butoxy)ethyl)-2-fluorobenzene (CAS 1249380-68-4)
- 4-(methoxymethyl)-4-(N-phenylpropionamido)-1-(2-(thiophen-2-yl)ethyl)piperidine 1-oxide (CAS CATO-C4X-18632)
- 4-Oxo-4-(piperazin-1-yl)butanoic acid (CAS 72547-43-4)
- 1-Chloro-2-((3-fluorobenzyl)oxy)-4-(trifluoromethyl)benzene (CAS 1443337-08-3)
- 4-Bromo-2-chloro-5-(difluoromethyl)pyridine (CAS 1471259-57-0)
- N-[(2H-1,3-Benzodioxol-5-yl)methyl]-2-(1H-1,2,4-triazol-1-yl)acetamide (CAS 478047-31-3)
- 2-(2-Fluoro-6-hydroxypyridin-4-yl)acetic acid (CAS 1227594-69-5)
- (R)-Methyl 2-amino-3-methoxypropanoate hydrochloride (CAS 1800300-79-1)
- Semaglutide impurity 42 (CAS CATO-C4X-222642)
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