5-(tert-Butyl)-1H-pyrazole-3-carboxylic acid hydrochloride CAS 247583-58-0
| CAS No. | 247583-58-0 |
| Molecular Formula | C8H12N2O2 |
| Molecular Weight | N/A |
| 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 5-(tert-Butyl)-1H-pyrazole-3-carboxylic acid hydrochloride (CAS 247583-58-0), a certified reference material (molecular formula C8H12N2O2HCl, MW 204.65 g/mol) for analytical method development and quality control.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, 5-(tert-Butyl)-1H-pyrazole-3-carboxylic acid hydrochloride is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 204.65 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 5-(tert-Butyl)-1H-pyrazole-3-carboxylic acid hydrochloride meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C8H12N2O2 HCl |
| Molecular Weight | 204.65 g/mol |
| Appearance | 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
- Diethyl (2S,3S)-oxirane-2,3-dicarboxylate (CAS 73890-18-3)
- 2-(3-Bromophenyl)-2-fluoroethan-1-amine (CAS 794472-18-7)
- 1-Methyl-N-(1-methyl-1h-pyrazol-3-yl)piperidin-4-amine (CAS 1184118-89-5)
- 4-Chloro-N-(2-(piperazin-1-yl)ethyl)aniline (CAS 952959-60-3)
- 3-(3,5-Dimethyl-piperidin-1-yl)-propylamine (CAS 878657-11-5)
- 1-(2-naphthyl)prop-2-en-1-one (CAS 4452-06-6)
- 4-Pentenoyl chloride (CAS 39716-58-0)
- 4-Amino-2H-pyrazolo[3,4-d]pyrimidin-3(5H)-one (CAS 128850-54-4)
- 4-(4-(Pyrrolidin-1-ylmethyl)benzoyl)benzonitrile (CAS 898776-08-4)
- Semaglutide Impurity 186 (CAS CATO-C4X-2226186)
Why CATO?
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