4-Chloro-2,5-difluoropyridine CAS 851386-40-8
| CAS No. | 851386-40-8 |
| Molecular Formula | C5H2ClF2N |
| Molecular Weight | 149.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C5H2ClF2N, 4-Chloro-2,5-difluoropyridine contains a nitrile group, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 149.53 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
4-Chloro-2,5-difluoropyridine (CAS 851386-40-8) is a high-purity analytical reference standard with the molecular formula C5H2ClF2N and a molecular weight of 149.53 g/mol.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 4-Chloro-2,5-difluoropyridine 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 | C5H2ClF2N |
| Molecular Weight | 149.53 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 |
| 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.) | 1987 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 6-Chloro-2,3-difluoropyridine (CAS 1214327-63-5)
- 2-Chloro-3,4-difluoropyridine (CAS 1227502-41-1)
- 2-Chloro-3,6-difluoropyridine (CAS 1807031-39-5)
- 5-Chloro-2,4-difluoropyridine (CAS 1807257-52-8)
- 2-Chloro-4,5-difluoropyridine (CAS 511522-70-6)
- 2-Chloro-4,6-difluoropyridine (CAS 34941-89-4)
- 3-Chloro-2,4-difluoropyridine (CAS 851179-01-6)
- 3-Chloro-2,5-difluoropyridine (CAS 851179-00-5)
Recommended Standards
- 4-chloro-2,3-difluoro-pyridine (CAS 851178-99-9)
- 4-Chloro-2,6-difluoropyridine (CAS 34968-33-7)
- 4-(Chloromethyl)-2,5-oxazolidinedione (CAS 3981-41-7)
- 4-Chloro-3,5-difluoropyridine (CAS 851178-97-7)
- (S)-2-methyl-4-((1-(perfluorophenyl)-1H-indol-3-yl)methyl)-4,5-dihydrooxazole (CAS 2195357-75-4)
- tert-Butyl 4-(aminomethyl)-3,3-difluoropyrrolidine-1-carboxylate (CAS 1627595-60-1)
- Malathion α-Monoacid-d5 (CAS 1794980-03-2)
- (R)-1-(4-fluorophenyl)-2-methoxyethan-1-amine (CAS 321840-35-1)
- 6-((2-Methoxyphenoxy)(phenyl)methyl)morpholin-3-one (CAS 93886-31-8)
- 2-((4-Bromophenyl)thio)-N-(3,4-dimethylphenyl)acetamide (CAS 329078-45-7)
- (1-((1,5-Dimethyl-1h-pyrazol-4-yl)methyl)piperidin-3-yl)methanamine (CAS 1006483-98-2)
- 4-(3,4-Diethoxyphenyl)-1,2,5-oxadiazol-3-amine (CAS 890010-28-3)
- 5-Chloro-1-ethyl-1H-pyrazole (CAS 1427020-01-6)
- Copper Peptide ·2 acetate salt (CAS 130120-57-9)
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