5-Chloro-2,3-difluoro-4-iodo-pyridine CAS 406676-26-4
| CAS No. | 406676-26-4 |
| Molecular Formula | C5HClF2IN |
| Molecular Weight | 275.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Chloro-2,3-difluoro-4-iodo-pyridine is closely related to a nitrile group, fluorine/chlorine/iodine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-Chloro-2,3-difluoro-4-iodo-pyridine (CAS 406676-26-4), molecular formula C5HClF2IN and molecular weight 275.42 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, fluorine/chlorine/iodine substitution, 5-Chloro-2,3-difluoro-4-iodo-pyridine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 275.42 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 5-Chloro-2,3-difluoro-4-iodo-pyridine 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 | C5HClF2IN |
| Molecular Weight | 275.42 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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.) | 2025 |
| Halogen Content | F/Cl/I-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 3-Chloro-2,6-difluoro-4-iodopyridine (CAS 685517-73-1)
- 3-Chloro-5,6-difluoro-2-iodopyridine (CAS 406676-37-7)
- 5-chloro-3-iodo-6-methyl-1,4-oxazin-2-one (CAS 1043870-52-5)
- (2-Chloro-5-(phenylcarbamoyl)phenyl)boronic acid (CAS 2096353-61-4)
- (3-Chloro-4-(phenylcarbamoyl)phenyl)boronic acid (CAS 2096337-11-8)
- 2-chloro-6-iodo-3-methoxy-pyridine (CAS 1171918-91-4)
- 2-Chloro-6-iodo-5-methylpyridin-3-ol (CAS 1203499-21-1)
- 6-Chloro-3-(3,4-dichlorophenyl)pyridazin-4-ol (CAS 80591-70-4)
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- 2-Iodofluorene (CAS 2523-42-4)
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- 1,4-Didodecyl-2,5-diiodobenzene (CAS 162715-93-7)
- 5-(3-Bromophenyl)-1,2,4-triazin-3-amine (CAS 886497-10-5)
- 3-Hydroxyhex-4-enoic acid (CAS 13893-40-8)
- 2-(Chloromethyl)-4-fluoro-1-nitrobenzene (CAS 109115-05-1)
- 2-(3,4-Difluorophenyl)isonicotinic acid (CAS 1225511-01-2)
- 1-Formylnaphthalen-2-yl 4-chlorobenzenesulfonate (CAS 431979-76-9)
- [5-31]-Semaglutide (CAS CATO-C4X-2226263)
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