5-Ethynyl-2-methyl-2H-tetrazole CAS 75394-63-7
| CAS No. | 75394-63-7 |
| Molecular Formula | C4H4N4 |
| Molecular Weight | 108.10 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-Ethynyl-2-methyl-2H-tetrazole.
5-Ethynyl-2-methyl-2H-tetrazole (CAS 75394-63-7), molecular formula C4H4N4 and molecular weight 108.10 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 5-Ethynyl-2-methyl-2H-tetrazole (C4H4N4) is characterized by a nitrile group. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
As a certified reference material (CRM), 5-Ethynyl-2-methyl-2H-tetrazole 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 | C4H4N4 |
| Molecular Weight | 108.10 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.) | 1978 |
| Nitrogen Atoms | 4 |
Related Ethynyl Standards
- 1-ethynyl-1-isopropyl-cyclopropane (CAS 2101782-54-9)
- 1-ethynyl-1-methylcyclopentane (CAS 28509-11-7)
- 3-Ethynyl-1,1-dimethylcyclobutane (CAS 66438-88-8)
- 1-Ethynyl-3-azabicyclo[3.1.0]Hexane (CAS 1934439-43-6)
- 1-Ethynyl-2-azabicyclo[2.1.1]Hexane (CAS 2126160-90-3)
- 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)
Recommended Standards
- 5-Aminofuran-2-carbonitrile (CAS 562100-62-3)
- 5-Methylisoxazole-3-carbonitrile (CAS 57351-99-2)
- 4-Formylpyridazine (CAS 50901-42-3)
- 5-Methylisoxazole-4-carbonitrile (CAS 260555-29-1)
- 5-Bromo-N-(1-morpholinopropan-2-yl)furan-2-carboxamide (CAS 1208756-51-7)
- 2-(5-(Pyridin-4-yl)-4H-1,2,4-triazol-3-yl)ethanamine (CAS 933716-01-9)
- 2-Amino-3-(4-chloro-2-(trifluoromethoxy)phenyl)propanoic acid (CAS 1435806-19-1)
- Velpatasvir Impurity 5 (CAS CATO-C4X-28945)
- N-methyl-1-(1-((tetrahydrofuran-2-yl)methyl)-1H-pyrazol-4-yl)methanamine (CAS 1342381-45-6)
- 5-Bromo-6-chloropyridine-3-sulfonamide (CAS 622815-58-1)
- 3-Chloro-N-(4-(pyrrolidin-1-yl)phenyl)benzamide (CAS 251097-20-8)
- Boc-D-Glu(OcHex)-OH (CAS 133464-27-4)
- 4-(4-(2,2,2-Trifluoroethyl)piperazin-1-yl)butanoic acid (CAS 1284096-45-2)
- Semaglutide Impurity 155 (x TFA Salt) (CAS CATO-C4X-2226155)
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