3-(4-Fluoro-3-nitrophenyl)-1-(1-methyl-2-oxo-5-phenyl-2,3-dihydro-1H-1,4-benzodiazepin-3-yl)urea CAS 1796920-47-2
| CAS No. | 1796920-47-2 |
| Molecular Formula | C23H18FN5O4 |
| Molecular Weight | 447.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3-(4-Fluoro-3-nitrophenyl)-1-(1-methyl-2-oxo-5-phenyl-2,3-dihydro-1H-1,4-benzodiazepin-3-yl)urea (CAS 1796920-47-2) is a high-purity analytical reference standard with the molecular formula C23H18FN5O4 and a molecular weight of 447.42 g/mol.
3-(4-Fluoro-3-nitrophenyl)-1-(1-methyl-2-oxo-5-phenyl-2,3-dihydro-1H-1,4-benzodiazepin-3-yl)urea (C23H18FN5O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C23H18FN5O4 |
| Molecular Weight | 447.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 5 |
Related Fluoro Standards
- 4-(3-Fluoro-4-methylbenzoyl)-3-hydroxy-5-(4-nitrophenyl)-1-(pyridin-3-ylmethyl)-1H-pyrrol-2(5H)-one (CAS 618073-84-0)
- 7-fluoro-1,4-dihydro-1-[(1S)-1-(hydroxymethyl)-2-methylpropyl]-6-iodo-4-oxo-3-Quinolinecarboxylic acid ethyl ester (CAS 697762-60-0)
- 4-(3-Fluoro-4-methoxybenzoyl)-3-hydroxy-5-(4-methoxyphenyl)-1-(pyridin-3-ylmethyl)-1H-pyrrol-2(5H)-one (CAS 618074-75-2)
- 5-Fluoro-3-(5-fluoro-4-(methylsulfinyl)pyrimidin-2-yl)-1-tosyl-1H-pyrrolo[2,3-b]pyridine (CAS 1259279-58-7)
- 3-Fluoro-6-isobutoxy-2,4-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile (CAS 2377606-11-4)
- 4-(3-Fluoro-4-methylbenzoyl)-3-hydroxy-5-(4-isopropylphenyl)-1-(pyridin-3-ylmethyl)-1H-pyrrol-2(5H)-one (CAS 618075-97-1)
- 3-(4-Fluoro-2-nitrophenoxy)-N-(4-phenoxyphenyl)thiophene-2-carboxamide (CAS 306977-57-1)
- 1-[[3-Fluoro-4-[5-[(2-fluorophenyl)methyl]-2-benzothiazolyl]phenyl]methyl]-3-azetidinecarboxylic Acid (CAS 1257093-40-5)
Recommended Standards
- Eravacycline impurity 17 (CAS 1431558-62-1)
- Eravacycline Impurity 10 (CAS 1207283-60-0)
- 287204-45-9 TSO2IAD7WJ PD-180970 UNII-TSO2IAD7WJ PD-180790 Pyrido(2,3-d)pyrimidin-7(8H)-one, 6-(2,6-dichlorophenyl)-2-((4-fluoro-3-methylphenyl)amino)-8-methyl- (CAS 287204-45-9)
- 3-Ethyl-1-propyl-8-(1-((6-(trifluoromethyl)pyridin-3-yl)methyl)-1H-pyrazol-4-yl)-3,9-dihydro-1H-purine-2,6-dione (CAS 631914-03-9)
- 1,3-Dimethyl-1H-pyrazolo[3,4-d]pyrimidine (CAS 87412-92-8)
- n-(4-Ethylphenyl)furan-2-carboxamide (CAS 199190-41-5)
- 3-(3-Nitrophenyl)-2-propenoic Acid 2-[Methyl(tetrahydro-1,1-dioxido-3-thienyl)amino]-2-oxoethyl Ester (CAS 749872-43-3)
- 2-(4-tert-Butylphenoxy)-3-methanesulfonyl-4-methyl-6-phenylpyridine (CAS 478245-55-5)
- 2-(tert-Butyl)-4-cyclopropoxy-N-methylpyridin-3-amine (CAS 1243414-17-6)
- 5-Iodo-2-O-methyluridine (CAS 34218-84-3)
- tert-Butyl 7-(hydroxymethyl)-5-oxa-2-azaspiro[3.4]octane-2-carboxylate (CAS 1330764-06-1)
- Meptyldinocap-Phenol (CAS 3687-22-7)
- (5-(Aminomethyl)pyrazin-2-yl)methanol (CAS 137815-74-8)
- Nonapeptide-1 (CAS 158563-45-2)
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