5-Isopentyl-4-methyl-1H-pyrazole CAS 321864-89-5
| CAS No. | 321864-89-5 |
| Molecular Formula | C9H16N2 |
| Molecular Weight | 152.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5-Isopentyl-4-methyl-1H-pyrazole.
5-Isopentyl-4-methyl-1H-pyrazole (CAS 321864-89-5), molecular formula C9H16N2 and molecular weight 152.24 g/mol, is a CATO reference standard with documented purity and traceability.
5-Isopentyl-4-methyl-1H-pyrazole (C9H16N2) contains a nitrile group. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C9H16N2 |
| Molecular Weight | 152.24 g/mol |
| Appearance | White to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
Related Isopentyl Standards
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- 1-Isopentyl-1h-imidazol-2-amine (CAS 1179613-87-6)
- 3-Isopentyl-1H-pyrazol-5-amine (CAS 1187862-39-0)
- 1-Isopentyl-1h-pyrazol-5-amine (CAS 3524-21-8)
- n-Isopentyl-2-methylbut-3-yn-2-amine (CAS 1343429-64-0)
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- 3-Isopentyl-1H-pyrazol-4-ol (CAS 856058-38-3)
Recommended Standards
- 5,6-Dimethyl-2-propyl-2,3-dihydropyrazine (CAS 72671-98-8)
- 5-phenyl-4,5-dihydro-1H-pyrazole (CAS 936-47-0)
- 5-(sec-Butyl)-3-ethyl-1H-pyrazole (CAS 442886-89-7)
- cis-1,2-Dithiane-4,5-diol (CAS 40227-25-6)
- Dimethyl2-methylhexanedioate (CAS 19780-94-0)
- 2H-Imidazo[4',5':5,6]benzo[1,2-d][1,2,3]thiadiazole (CAS 42341-44-6)
- 1-Propenyl Chloride (cis- and trans- mixture) (CAS 590-21-6)
- 1-Benzoyl-3H-pyrrolo[2,3-c]quinolin-4(5H)-one (CAS 503272-07-9)
- Tobramycin Impurity 5 (CAS CATO-C4X-22005)
- (3-Cyano-2-hydroxyphenyl)trifluoroborate (CAS 2376462-72-3)
- 2',3'-Dithiouridine (CAS 156592-92-6)
- 5-(P-tolyl)thiophene-2-carboxylic acid (CAS 40808-21-7)
- 1-Methylisoquinolin-7-amine (CAS 31181-24-5)
- D-Val23-Tirzepatide (CAS CATO-CPTD788911)
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