5-Chloro-2-iodopyridine CAS 244221-57-6
| CAS No. | 244221-57-6 |
| Molecular Formula | C5H3ClIN |
| Molecular Weight | 239.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C5H3ClIN, 5-Chloro-2-iodopyridine contains a nitrile group, chlorine/iodine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 239.44 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).
5-Chloro-2-iodopyridine (CAS 244221-57-6), molecular formula C5H3ClIN and molecular weight 239.44 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.
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.) | 2025 |
| 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-2-iodopyridine (CAS 77332-89-9)
- 3-Chloro-4-iodopyridine (CAS 77332-79-7)
- 4-Chloro-2-iodopyridine (CAS 22918-03-2)
- 4-chloro-3-iodopyridine (CAS 89167-34-0)
- (2-Chloro-5-(cyclopropylcarbamoyl)phenyl)boronic acid (CAS 1449132-64-2)
Recommended Standards
- Methyl 5-bromo-4-chloro-1H-pyrazole-3-carboxylate (CAS 1934275-37-2)
- Methyl 4-bromo-5-chloro-1H-pyrazole-3-carboxylate (CAS 1934374-39-6)
- Methyl 4-Bromo-5-chloro-2-furoate (CAS 58235-82-8)
- (4-Chloro-3-(cyclopropylcarbamoyl)phenyl)boronic acid (CAS 871332-73-9)
- 2-Formyl-5-nitrobenzoic acid (CAS 7464-91-7)
- N-(2-Ethoxyethyl)benzamide (CAS 149733-22-2)
- 2-((tert-Butoxycarbonyl)amino)-2-(3,3-difluorocyclobutyl)acetic acid (CAS 2097944-52-8)
- 3-Bromo-2-methylpyrazolo[1,5-a]pyrimidine (CAS 1159981-96-0)
- 2-[4-(aminomethyl)-1H-1,2,3-triazol-1-yl]acetic acid hydrochloride (CAS 1394041-59-8)
- 2-[4-(aminomethyl)phenoxy]ethan-1-ol hydrochloride (CAS 1221725-65-0)
- Acid Red 26 (CAS 3761-53-3)
- N-(5-amino-2-chlorophenyl)-4-fluorobenzamide (CAS 937392-58-0)
- 6-Isopropylpyridin-2(1H)-one (CAS 62969-85-1)
- Eledoisin Related Peptide (CAS 2990-43-4)
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