3-Ethynyl-5-methyl-1H-pyrazole CAS 21387-41-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 21387-41-7 |
| Molecular Formula | C6H6N2 |
| Molecular Weight | 106.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Ethynyl-5-methyl-1H-pyrazole (CAS 21387-41-7) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C6H6N2. Molecular weight: 106.13 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C6H6N2 |
| Molecular Weight | 106.13 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.) | 1963 |
| Nitrogen Atoms | 2 |
Related Ethynyl Standards
- 5-Ethynyl-1-methyl-1h-pyrazole (CAS 19762-15-3)
- 3-Ethynyl-1-methyl-1h-pyrazole (CAS 61514-59-8)
- 3-Ethynyl-4-methyl-1H-pyrazole (CAS 2137742-39-1)
- 5-Ethynyl-2-methyl-1H-imidazole (CAS 2137959-23-8)
- 5-Ethynyl-4-methyl-1H-imidazole (CAS 2228337-84-4)
- 37067-93-9 2-Ethynyl-1-methyl-1H-imidazole DTXSID80500992 (CAS 37067-93-9)
- 39806-89-8 4-Ethynyl-1-methyl-1H-pyrazole DTXSID20679777 (CAS 39806-89-8)
- 3-Ethynyl-2-methylfuran (CAS 1936544-90-9)
Recommended Standards
- 3-Methyl-1H-pyrrole-2-carbonitrile (CAS 24014-22-0)
- 3-Vinylpyridazine (CAS 63359-59-1)
- 3,4-Diazabicyclo[4.2.0]octa-1,3,5-triene (CAS 7490-58-6)
- 5-(Methylthio)-1,2,4-thiadiazol-3-amine (CAS 60093-10-9)
- 3-Chloro-5-(difluoromethyl)pyridin-2(1H)-one (CAS 1806787-39-2)
- Piperonylic Acid (CAS 94-53-1)
- Fluvastatin Impurity 18 (CAS CATO-C4X-165118)
- 2-Chloro-N-(4-(difluoromethoxy)phenyl)propanamide (CAS 871673-31-3)
- 1-(Oxan-3-yl)propan-1-amine (CAS 1491556-16-1)
- (Tyr9)-Cholecystokinin Octapeptide (sulfated) (H-9770.0005) (CAS 96607-61-3)
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