3-Chloro-5-fluoropyridine 1-oxide CAS 1221793-68-5
| CAS No. | 1221793-68-5 |
| Molecular Formula | C5H3ClFNO |
| Molecular Weight | 147.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C5H3ClFNO, 3-Chloro-5-fluoropyridine 1-oxide contains 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 147.53 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
3-Chloro-5-fluoropyridine 1-oxide (CAS 1221793-68-5), molecular formula C5H3ClFNO and molecular weight 147.53 g/mol, is a CATO reference standard with documented purity and traceability.
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-Chloro-5-fluoropyridine 1-oxide 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 | C5H3ClFNO |
| Molecular Weight | 147.53 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 5-Chloro-2-fluoropyridin-3-ol (CAS 1003711-65-6)
- 2-Chloro-3-fluoro-4-hydroxypyridine (CAS 1184172-46-0)
- 2-Chloro-5-fluoropyridin-4-ol (CAS 1196153-96-4)
- 6-Chloro-4-fluoropyridin-3-ol (CAS 1211530-63-0)
- 3-Chloro-5-fluoro-4-hydroxypyridine (CAS 1214327-70-4)
- 3-Chloro-5-fluoropyridin-2(1H)-one (CAS 1214345-43-3)
- 3-Chloro-2-fluoropyridin-4-ol (CAS 1227499-28-6)
- 4-Chloro-5-fluoropyridin-2(1H)-one (CAS 1227571-38-1)
Recommended Standards
- 5-Chloro-2-fluoropyridin-4-ol (CAS 1227571-47-2)
- 5-Chloro-4-fluoropyridin-2-ol (CAS 1227571-77-8)
- Chloridazon Impurity 1-15N2 (CAS 1189649-21-5)
- 2-chloro-4-fluoropyridin-3-ol (CAS 1227577-96-9)
- n-(2-(Piperidin-1-yl)ethyl)cyclopentanamine (CAS 1184741-03-4)
- 3-Phenyl-5-propylbenzofuran-6-ol (CAS 1269492-30-9)
- (1-(4-Chloro-7H-pyrrolo[2,3-d]pyrimidin-7-yl)cyclopropyl)methanol (CAS 1822785-77-2)
- Cefcapene Impurity 36 (CAS 1360188-88-0)
- (2E)-1-{3-[(2-chloro-6-fluorophenyl)methoxy]phenyl}-3-[(4-methoxyphenyl)amino]prop-2-en-1-one (CAS 478039-46-2)
- 6-(2-Hydroxyethyl)pyrazolo[1,5-a]pyrimidine-2-carboxylic acid (CAS 712319-12-5)
- (Ra,S)-Ph-Bn-SIPHOX (CAS 2074610-05-0)
- 1-(2,3-Dichlorophenyl)-1h-1,2,3-triazole-5-carboxylic acid (CAS 1153904-73-4)
- 1-(3-Chloro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)piperidine (CAS 2096334-57-3)
- Experimental Allergic Encephalitogenic Peptide (CAS 29705-92-8)
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