N-Butyl-3-(5-nitrofuran-2-yl)-1-phenyl-1H-pyrazole-4-carboxamide CAS 61621-05-4
| CAS No. | 61621-05-4 |
| Molecular Formula | C18H18N4O4 |
| Molecular Weight | 354.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies N-Butyl-3-(5-nitrofuran-2-yl)-1-phenyl-1H-pyrazole-4-carboxamide (CAS 61621-05-4), a certified reference material (molecular formula C18H18N4O4, MW 354.36 g/mol) for analytical method development and quality control.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, N-Butyl-3-(5-nitrofuran-2-yl)-1-phenyl-1H-pyrazole-4-carboxamide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 354.36 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C18H18N4O4 |
| Molecular Weight | 354.36 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Nitrogen Atoms | 4 |
Recommended Standards
- N-(7-((2R,4S,5R)-4-Hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-7H-pyrrolo[2,3-d]pyrimidin-4-yl)benzamide (CAS 95261-09-9)
- Propyl 4-((3-(2,4-dihydroxyphenyl)-1H-pyrazol-4-yl)oxy)benzoate (CAS 879458-58-9)
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