3-Chloro-2-iodopyridine CAS 77332-89-9
| CAS No. | 77332-89-9 |
| Molecular Formula | C5H3ClIN |
| Molecular Weight | 239.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-Chloro-2-iodopyridine is closely related to a nitrile group, chlorine/iodine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3-Chloro-2-iodopyridine (CAS 77332-89-9), molecular formula C5H3ClIN and molecular weight 239.44 g/mol, is a CATO reference standard with documented purity and traceability.
3-Chloro-2-iodopyridine (C5H3ClIN) contains a nitrile group, chlorine/iodine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C5H3ClIN |
| Molecular Weight | 239.44 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.) | 1979 |
| Halogen Content | Cl/I-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 2-Chloro-4-iodopyridine (CAS 153034-86-7)
- 2-Chloro-3-iodopyridine (CAS 78607-36-0)
- 2-Chloro-6-iodopyridine (CAS 258506-66-0)
- 3-Chloro-4-iodopyridine (CAS 77332-79-7)
- 4-Chloro-2-iodopyridine (CAS 22918-03-2)
- 4-chloro-3-iodopyridine (CAS 89167-34-0)
- 5-Chloro-2-iodopyridine (CAS 244221-57-6)
- (2-Chloro-5-(cyclopropylcarbamoyl)phenyl)boronic acid (CAS 1449132-64-2)
Recommended Standards
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- Methyl 5-bromo-4-chloro-1H-pyrazole-3-carboxylate (CAS 1934275-37-2)
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- Poly(4-hydroxy-2,2,6,6-tetramethyl-1-piperidineethanol-alt-1,4-butanedioic acid) (CAS 65447-77-0)
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- Ethyl 2-(3-phenylcyclobutyl)acetate (CAS 2120903-56-0)
- Olprinone Impurity 25 (CAS 1463413-21-9（free base）)
- 2-(4-Hydrazinylphenyl)-n-methylethane-1-sulfonamide (CAS 121679-30-9)
- (5Z)-5-{[3-(trifluoromethyl)phenyl]methylidene}-4H,5H,6H-thieno[2,3-b]thiopyran-4-one (CAS 478246-98-9)
- N-(3-Bromopyridin-2-yl)benzamide (CAS 620939-76-6)
- N-(9,9-dimethyl-9H-fluoren-4-yl)-9,9-dimethyl-9H-fluoren-2-amine (CAS 1644054-07-8)
- Semaglutide Impurity 246 (CAS CATO-C4X-2226246)
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