5-(Furan-2-yl)-3-(4-nitrophenyl)-1-phenyl-4,5-dihydro-1H-pyrazole CAS 4155-82-2
| CAS No. | 4155-82-2 |
| Molecular Formula | C19H15N3O3 |
| Molecular Weight | 333.34 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.
5-(Furan-2-yl)-3-(4-nitrophenyl)-1-phenyl-4,5-dihydro-1H-pyrazole (CAS 4155-82-2) is a high-purity analytical reference standard with the molecular formula C19H15N3O3 and a molecular weight of 333.34 g/mol.
5-(Furan-2-yl)-3-(4-nitrophenyl)-1-phenyl-4,5-dihydro-1H-pyrazole (C19H15N3O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C19H15N3O3 |
| Molecular Weight | 333.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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 |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 3 |
Related Furan Standards
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- Methyl 6-(furan-2-yl)-3-methyl-1-phenyl-1h-pyrazolo[3,4-b]pyridine-4-carboxylate (CAS 832746-65-3)
- N-(2-(Furan-3-yl)ethyl)-1-(4-(trifluoromethyl)phenyl)methanesulfonamide (CAS 1428355-77-4)
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Recommended Standards
- 5-(1-(2-Methoxyphenyl)-5-methyl-1H-1,2,3-triazol-4-yl)-3-phenyl-1,2,4-oxadiazole (CAS 894936-01-7)
- 5'-Amino-[1,1':3',1''-terphenyl]-4,4''-dicarboxylic acid (CAS 2230912-22-6)
- 4-Bromo-3,5-diethyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole (CAS 2550661-40-8)
- 6-Ethyl-7-hydroxy-3-(4-phenyl-4H-1,2,4-triazol-3-yl)-4H-1-benzopyran-4-one (CAS 847758-37-6)
- 3-(6-Amino-9H-purin-9-yl)nonan-2-ol (CAS 59262-86-1)
- (2,3-Dihydrobenzo[b][1,4]dioxin-2-yl)(4-ethylpiperazin-1-yl)methanone (CAS 21867-88-9)
- 3-Iodo-2,2-dimethylpropanal (CAS 87902-25-8)
- 5-[(4-Methoxyphenyl)methyl]-2-[(1H-1,2,4-triazol-1-yl)methyl]pyrimidine-4,6-diamine (CAS 338965-25-6)
- 4-tert-Butyl-N-(6-chloropyridin-3-yl)benzamide (CAS 724745-47-5)
- 2-Amino-3-bromo-4-(trifluoromethyl)pyridine (CAS 1227489-63-5)
- 2-(2-Amino-3-hydroxypropanamido)-2-(2-(5-(aminomethyl)-4-hydroxy-2-oxo-2,5-dihydro-1H-pyrrol-3-yl)-2-oxoethyl)malonic acid (CAS 38249-71-7)
- tert-Butyl (2-(hydroxymethyl)-4-methylphenyl)(methyl)carbamate (CAS 1416439-05-8)
- 1-(tert-Butyl) 2-ethyl 3-aminopiperidine-1,2-dicarboxylate (CAS 2103318-32-5)
- [y-Glu3]-Semaglutide Impurity 135 (CAS CATO-C4X-2226135)
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