2-Nitro-9,9-diphenyl-9H-fluorene CAS 2108145-19-1
| CAS No. | 2108145-19-1 |
| Molecular Formula | C25H17NO2 |
| Molecular Weight | 363.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 2-Nitro-9,9-diphenyl-9H-fluorene (CAS 2108145-19-1), a certified reference material (molecular formula C25H17NO2, MW 363.41 g/mol) for analytical method development and quality control.
Structurally, 2-Nitro-9,9-diphenyl-9H-fluorene (C25H17NO2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 18.0, corresponding to approximately 18 ring(s) or double-bond equivalent(s). With a molecular weight of 363.41 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
Physical & Chemical Properties
| Molecular Formula | C25H17NO2 |
| Molecular Weight | 363.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 1 |
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Recommended Standards
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- 2-(1-{[(9h-fluoren-9-yl)methoxy]carbonyl}piperidin-4-ylidene)acetic acid (CAS 885274-82-8)
- 3-(4-Propoxyphenyl)-N'-(1-(pyridin-4-yl)ethylidene)-1H-pyrazole-5-carbohydrazide (CAS 403659-19-8)
- 1-Acetylazetidine-3-carbaldehyde (CAS 1378450-79-3)
- 5-Benzyl-4-ethyl-4H-1,2,4-triazol-3-yl hydrosulfide (CAS 31405-22-8)
- 7-(Difluoromethyl)-2-(methylsulfonyl)-7,8-dihydroquinazolin-5(6H)-one (CAS 1706446-26-5)
- 4-Chloro-6-(chloromethyl)-1-methyl-1h-pyrazolo[3,4-d]pyrimidine (CAS 1255147-37-5)
- 2-(Diallylamino)-N-hydroxybenzenecarboximidamide (CAS 1220040-45-8)
- 2-(Chloromethyl)-4-cyano-3-(difluoromethyl)pyridine-6-acetonitrile (CAS 1805185-55-0)
- 5-methyl-1H-imidazol-2-amine,hydrochloride (CAS 6775-38-8)
- Phenylmethylsiloxane-dimethylsiloxane copolymers cst 50 (CAS 63148-52-7)
- 4-(Difluoromethyl)-6-iodo-2-(trifluoromethyl)nicotinic acid (CAS 1805200-27-4)
- Semaglutide impurity 251 (CAS CATO-C4X-2226251)
Why CATO?
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