5-(Furan-2-yl)-1-methyl-1H-pyrazole-3-carbaldehyde CAS 876728-40-4
| CAS No. | 876728-40-4 |
| Molecular Formula | C9H8N2O2 |
| Molecular Weight | 176.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-(Furan-2-yl)-1-methyl-1H-pyrazole-3-carbaldehyde (CAS 876728-40-4), a certified reference material (molecular formula C9H8N2O2, MW 176.17 g/mol) for analytical method development and quality control.
Based on its molecular formula C9H8N2O2, 5-(Furan-2-yl)-1-methyl-1H-pyrazole-3-carbaldehyde contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 176.17 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | C9H8N2O2 |
| Molecular Weight | 176.17 g/mol |
| Appearance | Off-white to pale 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 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
Related Furan Standards
- (E)-2-(Furan-2-yl)ethene-1-sulfonyl fluoride (CAS 1819971-32-8)
- 2-(Furan-2-carbonyl)-1-methyl-1h-imidazole (CAS 30148-29-9)
- 3-(Furan-2-yl)-5,6-dihydro-4H-pyrrolo[3,2-d]isoxazole (CAS 603067-28-3)
- 5-(Furan-2-ylmethyl)furan-2-carbaldehyde (CAS 33488-56-1)
- 4-(Furan-2-yl)-2-hydrazinylpyrimidine (CAS 931998-11-7)
- (E)-2-(Furan-2-ylmethylene)cyclohexanone (CAS 136118-15-5)
- 2-(Furan-2-yl)-1-isopropyl-1H-pyrrole (CAS 124494-79-7)
- 1-(furan-2-ylmethyl)-2,5-dimethyl-1H-pyrrole (CAS 5049-47-8)
Recommended Standards
- 5-(4-Methylphenyl)-3H-1,3,4-oxadiazol-2-one (CAS 83725-78-4)
- 5-(4-Methyl-1H-imidazol-5-yl)furan-2-carbaldehyde (CAS 929003-85-0)
- 5-(Methylamino)isoindoline-1,3-dione (CAS 24264-14-0)
- 5-(2-Hydroxyphenyl)-2,4-dihydro-3h-pyrazol-3-one (CAS 5186-66-3)
- 2-Amino-4-(4-iodophenyl)thiazole (CAS 31699-14-6)
- 4-(Methylthio)pyridin-2-amine (CAS 38240-26-5)
- (S)-4-(1-Aminoethyl)benzonitrile (CAS 36244-70-9)
- (E)-3-(3,4-dihydroxyphenyl)-1-(2-hydroxy-4,5-dimethylphenyl)prop-2-en-1-one (CAS 1353223-54-7)
- 3-Acetamido-2-nitrophenyl 4-(benzyl(methyl)amino)-3,5-difluorobenzoate (CAS 1864061-72-2)
- 3-(3-Phenylpyrrolidin-1-yl)-1-(p-tolyl)propan-1-one hydrochloride (CAS 425653-82-3)
- 2-Methylpropyl 4-oxopiperidine-1-carboxylate (CAS 30036-19-2)
- 1-(2,2,2-Trifluoroethyl)pyrazol-4-amine (CAS 919278-39-0)
- 6-((4-Chlorophenyl)thio)hexan-2-one (CAS 1157610-80-4)
- Semaglutide impurity 71 (CAS CATO-C4X-222671)
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