1-Methyl-5-(5-nitrofuran-2-yl)-1H-pyrazole-4-carbaldehyde CAS 61619-61-2
| CAS No. | 61619-61-2 |
| Molecular Formula | C9H7N3O4 |
| Molecular Weight | 221.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 221.17 g/mol gives 1-Methyl-5-(5-nitrofuran-2-yl)-1H-pyrazole-4-carbaldehyde distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1-Methyl-5-(5-nitrofuran-2-yl)-1H-pyrazole-4-carbaldehyde (CAS 61619-61-2) is a high-purity analytical reference standard with the molecular formula C9H7N3O4 and a molecular weight of 221.17 g/mol.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 1-Methyl-5-(5-nitrofuran-2-yl)-1H-pyrazole-4-carbaldehyde is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 221.17 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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 | C9H7N3O4 |
| Molecular Weight | 221.17 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Nitrogen Atoms | 3 |
Related Methyl Standards
- 1-Methyl-3-(5-nitrofuran-2-yl)-1H-pyrazole-4-carbaldehyde (CAS 61619-60-1)
- (5-Nitrofuran-2-yl)methyl 2-chloroacetate (CAS 6628-60-0)
- (4-(5-Nitrofuran-2-yl)phenyl)methanol (CAS 1198094-61-9)
- (3-(5-Nitrofuran-2-yl)phenyl)methanol (CAS 1349716-78-4)
- (1-Methyl-3-(5-nitrofuran-2-yl)-1H-pyrazol-4-yl)methanol (CAS 61621-37-2)
- 4-Ethyl-5-(5-nitrofuran-2-yl)-4H-1,2,4-triazol-3-amine (CAS 41735-52-8)
- (5-Nitrofuran-2-yl)(thiophen-2-yl)methanone (CAS 64258-99-7)
- 1-Methyl-3-(5-nitrofuran-2-yl)-1H-pyrazole-4-carbonitrile (CAS 61620-59-5)
Recommended Standards
- 1-methyl-5-nitro-1H-pyrrolo[2,3-b]pyridine-3-carboxylic acid (CAS 858340-95-1)
- 1-methyl-2,4-dioxo-1,2,3,4-tetrahydropyrido[2,3-d]pyrimidine-6-carboxylic acid (CAS 449210-08-6)
- 1-Methyl-6-nitro-1,4-dihydroquinoxaline-2,3-dione (CAS 90323-30-1)
- 1-fluoro-2-isothiocyanato-4-(trifluoromethyl)benzene (CAS 302912-40-9)
- 6-Bromo-1-methyl-1h-benzo[d][1,3]oxazine-2,4-dione (CAS 22721-17-1)
- 2,4,6-Trifluorophenylisothiocyanate (CAS 206761-91-3)
- Cyclobutyl(cyclohexyl)methanamine (CAS 1337610-10-2)
- N-(4-Oxoquinazolin-3(4H)-yl)acetamide (CAS 16347-87-8)
- N-(2-(1H-Benzo[d]imidazol-2-yl)ethyl)-4-chlorobenzenesulfonamide (CAS 332402-61-6)
- Carboxymethyl benzyl sulfide (CAS 103-46-8)
- tert-Butyl (3S,5R)-3-amino-5-methoxypiperidine-1-carboxylate (CAS 2227197-67-1)
- 5-(1,3-Dioxolan-2-yl)picolinonitrile (CAS 671776-91-3)
- N-(2-bromoethyl)-4-fluorobenzenesulfonamide (CAS 51983-24-5)
- Semaglutide impurity 45 (CAS CATO-C4X-222645)
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