9-(4-Chlorobenzylidene)-2-nitro-9H-fluorene CAS 4364-38-9
| CAS No. | 4364-38-9 |
| Molecular Formula | C20H12ClNO2 |
| Molecular Weight | 333.77 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 333.77 g/mol gives 9-(4-Chlorobenzylidene)-2-nitro-9H-fluorene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
9-(4-Chlorobenzylidene)-2-nitro-9H-fluorene (CAS 4364-38-9), molecular formula C20H12ClNO2 and molecular weight 333.77 g/mol, is a CATO reference standard with documented purity and traceability.
9-(4-Chlorobenzylidene)-2-nitro-9H-fluorene (C20H12ClNO2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
CATO manufactures 9-(4-Chlorobenzylidene)-2-nitro-9H-fluorene under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C20H12ClNO2 |
| Molecular Weight | 333.77 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chlorobenzylidene Standards
- 4-((2-Chlorobenzylidene)amino)-5-(2-fluorophenyl)-4H-1,2,4-triazole-3-thiol (CAS 578701-01-6)
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- N-(4-Chlorobenzylidene)-2-(3,4-diethoxyphenyl)ethanamine (CAS 832740-09-7)
- 2,5-Bis(4-chlorobenzylidene)cyclopentanone (CAS 42019-88-5)
- 4-(4-Chlorobenzylidene)-2-(3-nitrophenyl)oxazol-5(4H)-one (CAS 20345-11-3)
- 4-(4-Chlorobenzylidene)-2-(4-nitrophenyl)oxazol-5(4H)-one (CAS 96284-64-9)
- (Z)-3-(5-(4-chlorobenzylidene)-4-oxo-2-thioxothiazolidin-3-yl)propanoic acid (CAS 7177-97-1)
- N'-(4-Chlorobenzylidene)-5-(1-methyl-1H-pyrrol-2-yl)-1H-pyrazole-3-carbohydrazide (CAS 303106-80-1)
Recommended Standards
- 7-(2-Chlorobenzyl)-8-(dimethylamino)-3-methyl-3,7-dihydro-1H-purine-2,6-dione (CAS 332151-02-7)
- Methyl 2-(4-(3-chloropropanamido)phenoxy)benzoate (CAS 866020-20-4)
- 6,7-Dimethyl 5-(4-chlorophenyl)-2,3-dihydro-1H-pyrrolizine-6,7-dicarboxylate (CAS 62522-95-6)
- N-(2-(4-Chlorobenzoyl)-4,5-dimethoxyphenyl)acetamide (CAS 886493-95-4)
- N-(1-((2R,3R,4S,5R)-5-((Bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-4-((tert-butyldimethylsilyl)oxy)-3-hydroxytetrahydrofuran-2-yl)-2-oxo-1,2-dihydropyrimidin-4-yl)benzamide (CAS 81246-78-8)
- 2,4-Dimethylphenethylamine (CAS 76935-60-9)
- 1-(2-Chloro-6-fluorophenyl)propan-2-ol (CAS 1175301-21-9)
- 4-(Furan-3-yl)-3,5-dimethyl-1H-pyrazole (CAS 2097866-21-0)
- 2-(Benzo[d]oxazol-2-ylthio)-1-(3-(3-(pyridin-4-yl)-1,2,4-oxadiazol-5-yl)azetidin-1-yl)ethan-1-one (CAS 1251579-48-2)
- Tert-butyl (S)-6-(1-aminoethyl)-3,4-dihydro-1,7-naphthyridine-1(2H)-carboxylate (CAS 2387565-09-3)
- 4-(Aminomethyl)-5-(difluoromethyl)nicotinic acid (CAS 1806794-94-4)
- 2-(2-Ethyl-4-fluorophenoxy)acetyl chloride (CAS 1987321-02-7)
- 2,5-Difluoro-4-methoxybenzoic acid (CAS 1060739-01-6)
- CBP501 Affinity Peptide trifluoroacetate salt (CAS 1351804-17-5)
Why CATO?
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