Pyrisoxazole CAS 847749-37-5
| CAS No. | 847749-37-5 |
| Molecular Formula | C16H17ClN2O |
| Molecular Weight | 288.77 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Pyrisoxazole (CAS 847749-37-5), molecular formula C16H17ClN2O and molecular weight 288.77 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Pyrisoxazole (C16H17ClN2O) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 288.77 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
CATO manufactures Pyrisoxazole under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C16H17ClN2O |
| Molecular Weight | 288.77 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Pyrisoxazole Standards
Recommended Standards
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- 4-[(3-Methoxyphenyl)methyl]-2,3,4,5-tetrahydro-1,4-benzoxazepin-5-one (CAS 866156-32-3)
- tert-Butyl ((1S,2R)-2-hydroxy-1,2-diphenylethyl)carbamate (CAS 813459-59-5)
- (8-Azabicyclo[3.2.1]oct-2-en-8-yl)(5-methylisoxazol-4-yl)methanone (CAS 1797182-40-1)
- 1-(2-Amino-6-chloropyridin-3-yl)ethan-1-one (CAS 1211520-37-4)
- (2-chloroethyl)(methyl)(prop-2-en-1-yl)amine hydrochloride (CAS 857593-13-6)
- Hydroxychloroquine Impurity 53 (CAS 109-83-1)
- ((Cys31,Nva34)-Neuropeptide Y (27-36))2 (CAS 172997-92-1)
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