3-Ethyl-3H-[1,2,3]triazolo[4,5-d]pyrimidine-5,7(4H,6H)-dione CAS 2083-07-0
| CAS No. | 2083-07-0 |
| Molecular Formula | C6H7N5O2 |
| Molecular Weight | 181.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Ethyl-3H-[1,2,3]triazolo[4,5-d]pyrimidine-5,7(4H,6H)-dione (CAS 2083-07-0), molecular formula C6H7N5O2 and molecular weight 181.15 g/mol, is a CATO reference standard with documented purity and traceability.
3-Ethyl-3H-[1,2,3]triazolo[4,5-d]pyrimidine-5,7(4H,6H)-dione (C6H7N5O2) 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C6H7N5O2 |
| Molecular Weight | 181.15 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 5 |
Recommended Standards
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- 2-(5-Oxopyrrolidin-2-yl)acetic acid (CAS 64520-53-2)
- Maltol-d3 (CAS 132331-92-1)
- Ethyl 3-bromo-4-(2,2,2-trifluoroacetamido)benzoate (CAS 160425-34-3)
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- Ethyl 6-iodonicotinate (CAS 151917-39-4)
- 4,4-Dimethyl-1-(trimethylsilyl)pent-1-yn-3-one (CAS 53723-94-7)
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- Ferulic Acid Impurity 7 (CAS CATO-C4X-22727)
- Semaglutide impurity 276 (CAS CATO-C4X-2226276)
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