4-Ethynyl-1,5-dimethyl-1H-pyrazole CAS 61514-54-3
| CAS No. | 61514-54-3 |
| Molecular Formula | C7H8N2 |
| Molecular Weight | 120.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Ethynyl-1,5-dimethyl-1H-pyrazole is closely related to a nitrile group, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-Ethynyl-1,5-dimethyl-1H-pyrazole (CAS 61514-54-3), molecular formula C7H8N2 and molecular weight 120.15 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, an aromatic ring system, 4-Ethynyl-1,5-dimethyl-1H-pyrazole is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 120.15 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-Ethynyl-1,5-dimethyl-1H-pyrazole 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 | C7H8N2 |
| Molecular Weight | 120.15 g/mol |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Nitrogen Atoms | 2 |
Related Ethynyl Standards
- 5-Ethynyl-2,3-dimethylfuran (CAS 1057670-06-0)
- 5-Ethynyl-1,2-dimethyl-1H-imidazole (CAS 1201657-10-4)
- 3-Ethynyl-2-cyclohexenone (CAS 124267-26-1)
- 1-Ethyl-2-ethynyl-1h-imidazole (CAS 1339042-77-1)
- 1-Ethyl-5-ethynyl-1h-pyrazole (CAS 1344083-08-4)
- 1-Ethyl-3-ethynyl-1H-pyrazole (CAS 1354706-83-4)
- 1-Ethyl-4-ethynyl-1H-pyrazole (CAS 573982-81-7)
- 3-Ethynyl-1,4-dimethyl-1H-pyrazole (CAS 2105612-53-9)
Recommended Standards
- 4-Ethynyl-1,3-dimethyl-1H-pyrazole (CAS 61514-53-2)
- 4-Ethynyl-3,5-dimethyl-1H-pyrazole (CAS 22825-22-5)
- 4-Ethynyl-1,2-dimethyl-1H-imidazole (CAS 959918-22-0)
- 4-Methyl-2-vinylpyrimidine (CAS 2839649-19-1)
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