4-Ethyl-3-nitro-4H-1,2,4-triazole CAS 139339-81-4
| CAS No. | 139339-81-4 |
| Molecular Formula | C4H6N4O2 |
| Molecular Weight | 142.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Ethyl-3-nitro-4H-1,2,4-triazole (CAS 139339-81-4), molecular formula C4H6N4O2 and molecular weight 142.12 g/mol, is a CATO reference standard with documented purity and traceability.
4-Ethyl-3-nitro-4H-1,2,4-triazole (C4H6N4O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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), 4-Ethyl-3-nitro-4H-1,2,4-triazole 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 | C4H6N4O2 |
| Molecular Weight | 142.12 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 4 |
Related Ethyl Standards
- 1-Ethyl-4-nitro-1H-1,2,3-triazole (CAS 107945-67-5)
- 1-Methyl-4-nitro-1H-imidazol-2-amine (CAS 1262282-20-1)
- 2-Methyl-5-nitro-2H-pyrazol-3-ylamine (CAS 132038-70-1)
- 5-Methyl-3-nitro-1H-pyrazol-1-amine (CAS 151588-03-3)
- 3-Methyl-4-nitro-1H-pyrazol-1-amine (CAS 151588-04-4)
- (4-Nitro-1H-pyrazol-3-yl)methanamine (CAS 1936295-24-7)
- 1-Methyl-3-nitro-1H-pyrazol-4-amine (CAS 39205-76-0)
- 1-Methyl-4-nitro-1H-pyrazol-3-amine (CAS 20055-00-9)
Recommended Standards
- 2-(4-Amino-2h-1,2,3-triazol-2-yl)acetic acid (CAS 1368124-71-3)
- N-(4-Amino-1,2,5-oxadiazol-3-yl)acetamide (CAS 140706-47-4)
- 2-(5-Amino-1h-1,2,4-triazol-1-yl)acetic acid (CAS 1341722-85-7)
- 5-Amino-(1H)-1,2,4-triazole-3-acetic Acid (CAS 143832-52-4)
- tert-Butyl (1-(5-bromopyridin-3-yl)piperidin-4-yl)carbamate (CAS 1289019-36-8)
- 2-Chloro-3-(chloromethyl)pyrazine hydrochloride (CAS 1416354-33-0)
- (2E)-3-(Dimethylamino)-1-(2-phenyl-1,3-thiazol-5-yl)prop-2-en-1-one (CAS 338414-33-8)
- Ambroxol Impurity 52 (CAS CATO-C4X-108552)
- 2,4-Dichloro-6,6-dimethyl-8,9-dihydro-6H-[1,4]oxazino[4,3-e]purine (CAS 1382981-73-8)
- 5-(tert-Butyl)-1-methyl-1H-indole (CAS 210536-49-5)
- 5-[(5-chloro-2,4-dimethoxyphenyl)sulfamoyl]-2-methylbenzoic acid (CAS 438021-83-1)
- 4-Amino-1-methyl-1H-pyrrole-2-carboxylic acid hydrochloride (CAS 198765-34-3)
- (2-{[(4-methylpiperidin-1-yl)sulfonyl]methyl}phenyl)methanamine hydrochloride (CAS 1423031-28-0)
- (Cys2)-Neuropeptide Y-8-aminooctanoyl-(D-Cys27)-Neuropeptide Y (25-32) (H-3298.0500) (CAS 128806-04-2)
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