5-Ethynyl-1-methyl-1H-1,2,4-triazole CAS 55847-46-6
| CAS No. | 55847-46-6 |
| Molecular Formula | C5H5N3 |
| Molecular Weight | 107.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Ethynyl-1-methyl-1H-1,2,4-triazole (CAS 55847-46-6), a certified reference material (molecular formula C5H5N3, MW 107.11 g/mol) for analytical method development and quality control.
Based on its molecular formula C5H5N3, 5-Ethynyl-1-methyl-1H-1,2,4-triazole contains a nitrile group; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 107.11 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C5H5N3 |
| Molecular Weight | 107.11 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 |
| CAS Registry Year (est.) | 1972 |
| Nitrogen Atoms | 3 |
Related Ethynyl Standards
- 5-Ethynyl-1-methyl-1H-1,2,3-triazole (CAS 1602775-02-9)
- 4-Ethynyl-1-methyl-1H-1,2,3-triazole (CAS 1809889-77-7)
- 2-Ethynyl-5-methyloxazole (CAS 2304404-76-8)
- 3-Ethynyl-1-methyl-1H-1,2,4-triazole (CAS 55847-47-7)
- 1-Ethynyl-3-azabicyclo[3.1.0]Hexane (CAS 1934439-43-6)
- 1-Ethynyl-2-azabicyclo[2.1.1]Hexane (CAS 2126160-90-3)
- 1-ethynyl-1,1'-bi(cyclopropane) (CAS 1391837-72-1)
- 5-Ethynyl-1-methyl-1h-pyrazole (CAS 19762-15-3)
Recommended Standards
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- Semaglutide impurity 237 (CAS CATO-C4X-2226237)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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