Azapropazone CAS 13539-59-8
| CAS No. | 13539-59-8 |
| Molecular Formula | C16H20N4O2 |
| Molecular Weight | 300.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 300.36 g/mol gives Azapropazone distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Azapropazone (CAS 13539-59-8), molecular formula C16H20N4O2 and molecular weight 300.36 g/mol, is a CATO reference standard with documented purity and traceability.
Azapropazone (C16H20N4O2) contains a nitrogen-containing heterocyclic scaffold, 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.
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 | C16H20N4O2 |
| Molecular Weight | 300.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Nitrogen Atoms | 4 |
Related Azapropazone Standards
Recommended Standards
- 3-(3,4-Dimethoxyphenyl)-6-(piperazin-1-yl)pyridazine (CAS 1338678-88-8)
- Tert-butyl 3-(quinazolin-4-ylamino)azetidine-1-carboxylate (CAS 1389315-00-7)
- 3-(2,5-Dimethoxyphenyl)-6-piperazin-1-ylpyridazine (CAS 1338671-24-1)
- tert-Butyl 3-amino-2-phenyl-2,6-dihydropyrrolo[3,4-c]pyrazole-5(4H)-carboxylate (CAS 1414568-27-6)
- N-(2-bromophenyl)-2-(4-(3-chlorophenyl)piperazin-1-yl)acetamide (CAS 797775-73-6)
- Allylescaline (CAS 39201-75-7)
- 6,7-Dimethoxy-1H-indole (CAS 31165-13-6)
- 2-Chloro-3-(methylamino)isonicotinaldehyde (CAS 1289148-11-3)
- Methyl 4,6-dibromo-3-methoxypicolinate (CAS 350602-03-8)
- 5-Bromo-6-fluoropyridin-2-ol (CAS 1227597-58-1)
- Chromium, [diaqua(2,2'-bipyridine-κN1,κN1')nickel]-μ-oxotrioxo-, dihydrate (CAS 433923-16-1)
- Ethyl (3-([1,1'-biphenyl]-4-yl)-5-amino-1,2-dihydropyrido[3,4-b]pyrazin-7-yl)carbamate (CAS 82586-04-7)
- 1-(2-Methyl-5-nitrophenyl)-1H-pyrrole-2,5-dione (CAS 61294-20-0)
- Insulin Degludec Impurity 28 (CAS CATO-C4X-215728)
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