3-Ethyl-[1,2,4]triazolo[4,3-a]pyrazine CAS 33590-18-0
| CAS No. | 33590-18-0 |
| Molecular Formula | C7H8N4 |
| Molecular Weight | 148.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 3-Ethyl-[1,2,4]triazolo[4,3-a]pyrazine (C7H8N4) is characterized by a nitrile group, an aromatic ring system. 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).
CATO supplies 3-Ethyl-[1,2,4]triazolo[4,3-a]pyrazine (CAS 33590-18-0), a certified reference material (molecular formula C7H8N4, MW 148.17 g/mol) for analytical method development and quality control.
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 | C7H8N4 |
| Molecular Weight | 148.17 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 4 |
Related Ethyl Standards
- 7-Methyl-[1,2,4]triazolo[4,3-a]pyridin-8-amine (CAS 1150617-76-7)
- 7-methyl-[1,2,4]triazolo[1,5-a]pyridin-8-amine (CAS 1150617-78-9)
- 7-Methyl-[1,2,4]triazolo[1,5-a]pyridin-5-amine (CAS 1153431-58-3)
- [1,2,4]Triazolo[1,5-a]pyridine-7-methanamine (CAS 1313726-30-5)
- [1,2,4]Triazolo[1,5-a]pyridin-2-ylmethanamine (CAS 1369412-53-2)
- [1,2,4]Triazolo[1,5-a]pyridine-6-methanamine (CAS 943894-99-3)
- 1-{[1,2,4]triazolo[4,3-a]pyridin-3-yl}methanamine (CAS 91981-59-8)
- 2-ethyl-[1,2,4]triazolo[1,5-c]pyrimidine (CAS 69141-82-8)
Recommended Standards
- 3-Amino-6-methyl-1H-pyrazolo[3,4-b]pyridine (CAS 79173-38-9)
- 3-Methyl-[1,2,3]triazolo[1,5-a]pyridin-5-amine (CAS 2879235-02-4)
- 3-Amino-5,6-dimethylpyrazine-2-carbonitrile (CAS 63352-08-9)
- 3-Methyl-[1,2,4]triazolo[4,3-a]pyridin-8-amine (CAS 31040-12-7)
- (4-Ethylfuran-2-yl)(phenyl)methanol (CAS 1248390-62-6)
- Methyl 2-(3-amino-4-chloro-1h-pyrazol-1-yl)acetate (CAS 1339160-83-6)
- trans-4-(3-Methoxybenzoyl)cyclohexane-1-carboxylic acid (CAS 736136-06-4)
- 1-Methyl-6,7,8,9-tetrahydro-1H-naphtho[1,2-d]imidazole (CAS 108629-36-3)
- 4-[3-(3-MEthylphenyl)-1h-indol-2-yl]butan-1-amine oxalate (CAS 1177278-82-8)
- Estriol Impurity 13 (CAS CATO-C4X-163713)
- tert-Butyl 4-chlorospiro[indoline-3,4'-piperidine]-1'-carboxylate (CAS 1129432-44-5)
- N-(3-Cyanophenyl)-2-phenylacetamide (CAS 89246-40-2)
- 2-{[Benzyl(methyl)amino]methyl}-4-fluoroaniline (CAS 1154287-33-8)
- Tirzepatide Impurity 38 (CAS CATO-C4X-324038)
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