5-cyclobutyl-1-methyl-1H-pyrazole-4-carboxylic acid hydrochloride CAS 1909326-05-1
| CAS No. | 1909326-05-1 |
| Molecular Formula | C9H12N2O2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-cyclobutyl-1-methyl-1H-pyrazole-4-carboxylic acid hydrochloride is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-cyclobutyl-1-methyl-1H-pyrazole-4-carboxylic acid hydrochloride (CAS 1909326-05-1) is a high-purity analytical reference standard with the molecular formula C9H12N2O2HCl and a molecular weight of 216.66 g/mol.
Based on its molecular formula C9H12N2O2HCl, 5-cyclobutyl-1-methyl-1H-pyrazole-4-carboxylic acid hydrochloride contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 216.66 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).
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 | C9H12N2O2 HCl |
| Molecular Weight | 216.66 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- 2-(3-Cyclopropyl-4-(4-fluorophenyl)-1H-pyrazolo[3,4-b]pyridin-1-yl)acetic acid (CAS 937606-50-3)
- 2-((2-Oxo-4-phenyl-2h-chromen-7-yl)oxy)propanoic acid (CAS 270596-08-2)
- 4-Phenyl-3-propyl-1h-pyrazol-5-amine (CAS 108669-65-4)
- Semaglutide Impurity 163 (x TFA Salt) (CAS CATO-C4X-2226163)
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