3-Ethylisoxazolo[5,4-d]pyrimidin-4(5H)-one CAS 175348-11-5
| CAS No. | 175348-11-5 |
| Molecular Formula | C7H7N3O2 |
| Molecular Weight | 165.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 165.15 g/mol gives 3-Ethylisoxazolo[5,4-d]pyrimidin-4(5H)-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-Ethylisoxazolo[5,4-d]pyrimidin-4(5H)-one (CAS 175348-11-5), molecular formula C7H7N3O2 and molecular weight 165.15 g/mol, is a CATO reference standard with documented purity and traceability.
3-Ethylisoxazolo[5,4-d]pyrimidin-4(5H)-one (C7H7N3O2) 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), 3-Ethylisoxazolo[5,4-d]pyrimidin-4(5H)-one 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 | C7H7N3O2 |
| Molecular Weight | 165.15 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.) | 2007 |
| Nitrogen Atoms | 3 |
Related Ethylisoxazolo Standards
Recommended Standards
- 2,3-Dihydro-5-nitrobenzofuran (CAS 17403-47-3)
- 4-Methoxy-3-methylisoxazolo[5,4-d]pyrimidine (CAS 175348-25-1)
- 3-(3,6-Dioxo-3,6-dihydropyridazin-1(2H)-yl)propanenitrile (CAS 17285-16-4)
- 4-(3-Methylisoxazol-5-yl)furan-2(5H)-one (CAS 175687-55-5)
- 2-Bromo-5-cyano-4-iodobenzoic acid (CAS 1806064-94-7)
- 3-Pyrrolidin-1-ylmethyl-piperidine 3-(pyrrolidin-1-ylmethyl)piperidine 3-(1-Pyrrolidinylmethyl)piperidine 514842-98-9 (CAS 514842-98-9)
- 2-(Azetidin-3-yloxy)-N-(tert-pentyl)acetamide (CAS 1341882-70-9)
- 1-Methyl-2-phenyl-1H-indole-5-carbonitrile (CAS 741709-19-3)
- 1-(2-Amino-1-(2,5-dimethoxyphenyl)ethyl)pyrrolidine-3-carboxylic acid (CAS 886363-82-2)
- 2,5-Dibromopyridine (CAS 624-28-2)
- 1H,1H,5H-Octafluoropentoxytrimethoxysilane (CAS 1429938-98-6)
- ent-Duvelisib (CAS 1261590-48-0)
- 8-Chloro-5-methylpyrido[3,4-d]pyrimidin-4(3H)-one (CAS 2227201-91-2)
- Acetyl Tripeptide-1 (CAS 350595-76-5)
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