5-Chloro-2-(4-fluorophenyl)oxazolo[5,4-b]pyridine CAS 1422198-87-5
| CAS No. | 1422198-87-5 |
| Molecular Formula | C12H6ClFN2O |
| Molecular Weight | 248.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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 supplies 5-Chloro-2-(4-fluorophenyl)oxazolo[5,4-b]pyridine (CAS 1422198-87-5), a certified reference material (molecular formula C12H6ClFN2O, MW 248.64 g/mol) for analytical method development and quality control.
Based on its molecular formula C12H6ClFN2O, 5-Chloro-2-(4-fluorophenyl)oxazolo[5,4-b]pyridine contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 248.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 5-Chloro-2-(4-fluorophenyl)oxazolo[5,4-b]pyridine 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 | C12H6ClFN2O |
| Molecular Weight | 248.64 g/mol |
| Purity | 97%+ |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 6-Chloro-3-(4-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazine (CAS 1094260-22-6)
- 6-Chloro-3-(2-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazine (CAS 1094354-48-9)
- 6-Chloro-3-(3-fluorophenyl)[1,2,4]triazolo[4,3-b]pyridazine (CAS 1094425-19-0)
- 3-Chloro-6-(4-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazine (CAS 1116743-29-3)
- 2-(2-Chloro-4-fluorophenoxy)nicotinonitrile (CAS 1183594-45-7)
- 6-Chloro-5-fluoro-2-(pyrazin-2-yl)-1H-benzo[d]imidazole (CAS 1257535-23-1)
- 5-Chloro-2-(2-fluorophenyl)oxazolo[5,4-b]pyridine (CAS 126921-80-0)
- 4-Chloro-1-(3-fluorophenyl)-1H-pyrazolo[3,4-d]pyrimidine (CAS 1269702-96-6)
Recommended Standards
- 5-Chloro-2-(3-fluorophenyl)oxazolo[5,4-b]pyridine (CAS 1422198-83-1)
- 6-Chloro-1-(6-fluoropyridin-2-yl)-1H-pyrazolo[4,3-c]pyridine (CAS 1527524-87-3)
- 6-Chloro-2-(4-fluorophenyl)oxazolo[5,4-b]pyridine (CAS 1354749-65-7)
- 4-[(5-Chloro-3-fluoro-2-pyridyl)oxy]benzonitrile (CAS 1538764-41-8)
- 1-(5-Amino-3,3-difluoropiperidin-1-yl)ethan-1-one (CAS 2166650-58-2)
- 2,3-Dihydro-1H-inden-2-yl acetate (CAS 4254-31-3)
- Boc-D-Alg(Z)2-OH (CAS 1932279-96-3)
- 2-Bromo-p-cresol (CAS 6627-55-0)
- 5-Bromo-7-methylindoline-2,3-dione (CAS 77395-10-9)
- Dapagliflozin Impurity 55 (CAS CATO-C4X-113855)
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- trans-1-Benzyl 3-methyl 4-(4-chlorophenyl)pyrrolidine-1,3-dicarboxylate (CAS 2140264-30-6)
- Semaglutide impurity 261 (CAS CATO-C4X-2226261)
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