9-(3-Nitrobenzylidene)-9H-fluorene CAS 4421-51-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 4421-51-6 |
| Molecular Formula | C20H13NO2 |
| Molecular Weight | 299.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
9-(3-Nitrobenzylidene)-9H-fluorene (CAS 4421-51-6) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C20H13NO2. Molecular weight: 299.32 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C20H13NO2 |
| Molecular Weight | 299.32 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
Related Nitrobenzylidene Standards
- 9-(4-Nitrobenzylidene)-9H-fluorene (CAS 6954-71-8)
- (E)-2-((4-nitrobenzylidene)amino)isoindoline-1,3-dione (CAS 32387-08-9)
- (Z)-4-(2-nitrobenzylidene)-2-phenyloxazol-5(4h)-one (CAS 66949-10-8)
- (Z)-4-(3-Nitrobenzylidene)-2-phenyloxazol-5(4H)-one (CAS 66949-11-9)
- (Z)-4-(4-nitrobenzylidene)-2-phenyloxazol-5(4h)-one (CAS 57427-80-2)
- (Z)-4-(4-Nitrobenzylidene)-3-phenylisoxazol-5(4H)-one (CAS 61588-01-0)
- 3-((2-Nitrobenzylidene)amino)quinazolin-4(3H)-one (CAS 88404-50-6)
- 3-((4-Nitrobenzylidene)amino)quinazolin-4(3H)-one (CAS 62176-69-6)
Recommended Standards
- 6,7-Dimethoxy-N-((5-methylfuran-2-yl)methyl)quinazolin-4-amine (CAS 477860-00-7)
- 6-(2,5-Dimethylfuran-3-yl)-1-(propan-2-yl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid (CAS 924249-82-1)
- 9,10-Anthracenedione, 1-(phenylamino)- (CAS 2944-28-7)
- 6-((3-Iodopyridin-4-yl)oxy)furo[3,2-b]pyridine (CAS 1228665-78-8)
- 1-(5-(Trifluoromethyl)pyridin-2-yl)-1H-pyrazole-4-sulfonamide (CAS 1281826-30-9)
- 4-Methyl-N-(pyridin-4-ylmethyl)aniline (CAS 16552-48-0)
- N1-Cyclohexyl-4-(ethylsulfonyl)-N1-methyl-1,3-benzenediamine (CAS 1220033-94-2)
- (R)-b-Amino-2-bromobenzenebutanoic acid (CAS 740792-12-5)
- 6,6,6-trifluorohexan-3-one (CAS 1194765-43-9)
- Tirzepatide Impurity 12 (CAS CATO-C4X-324012)
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