5-[(1h-pyrazol-1-yl)methyl]-1,2-oxazole-3-carboxylic acid CAS 1007303-85-6
| CAS No. | 1007303-85-6 |
| Molecular Formula | C8H7N3O3 |
| Molecular Weight | 193.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 5-[(1h-pyrazol-1-yl)methyl]-1,2-oxazole-3-carboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 193.16 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
5-[(1h-pyrazol-1-yl)methyl]-1,2-oxazole-3-carboxylic acid (CAS 1007303-85-6) is a high-purity analytical reference standard with the molecular formula C8H7N3O3 and a molecular weight of 193.16 g/mol.
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 | C8H7N3O3 |
| Molecular Weight | 193.16 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 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 3 |
Related h Standards
- (1-(2-(1H-pyrazol-1-yl)ethyl)-1H-1,2,3-triazol-4-yl)methanol (CAS 1251127-81-7)
- 2-(1H-pyrazol-1-yl)-2-(thiophen-3-yl)ethan-1-amine (CAS 1247201-57-5)
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- (1-(2-(1H-pyrazol-1-yl)ethyl)-1H-1,2,3-triazol-4-yl)methanamine (CAS 1247106-82-6)
- 1-((1H-pyrazol-1-yl)methyl)-1H-pyrazole-3-carboxylic acid (CAS 1005631-12-8)
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