3-Chloro-2-iodo-5,6-dimethoxypyridine CAS 910616-72-7
| CAS No. | 910616-72-7 |
| Molecular Formula | C7H7ClINO2 |
| Molecular Weight | 299.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-Chloro-2-iodo-5,6-dimethoxypyridine.
3-Chloro-2-iodo-5,6-dimethoxypyridine (CAS 910616-72-7), molecular formula C7H7ClINO2 and molecular weight 299.49 g/mol, is a CATO reference standard with documented purity and traceability.
3-Chloro-2-iodo-5,6-dimethoxypyridine (C7H7ClINO2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/iodine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; 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.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 3-Chloro-2-iodo-5,6-dimethoxypyridine 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 | C7H7ClINO2 |
| Molecular Weight | 299.49 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, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl/I-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 2-Chloro-4-iodo-3-(methoxymethoxy)pyridine (CAS 1207973-14-5)
- 5-Chloro-4-iodo-2,3-dimethoxypyridine (CAS 1299607-43-4)
- 2-Chloro-4-iodo-5-(methoxymethoxy)pyridine (CAS 877133-57-8)
- 6-Chloro-2-(ethylamino)-5-iodopyrimidin-4(3H)-one (CAS 1706432-24-7)
- 2-Chloro-6-nitro-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)phenol (CAS 2244622-57-7)
- 5-Chloro-4-iodo-2-nitrophenol (CAS 1037298-07-9)
- 4-Chloro-3-iodo-5-nitropyridin-2-amine (CAS 1310729-70-4)
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Recommended Standards
- 7-((Triisopropylsilyl)ethynyl)-3H-imidazo[4,5-b]pyridine (CAS 2500888-31-1)
- 2-(Dimethylamino)ethyl tetradecanoate (CAS 43016-78-0)
- D-Sphingosine (CAS 2733-29-1)
- 1-Nitrooctadecane (CAS 66292-30-6)
- 2-Chloro-N-(2,3,4,5,6-pentamethylphenyl)acetamide (CAS 64503-43-1)
- 2-(2,2-Dimethyl-5-oxo-1,3-dioxolan-4-yl)acetaldehyde (CAS 1401974-06-8)
- 1,3-Dihydro-1,3-dioxo-2H-isoindol-2-yl α,α-dimethylbenzeneacetate (CAS 2241846-03-5)
- 3-(Allyloxy)-5-methoxythiophene-2-carboxylic acid (CAS 1708079-44-0)
- tert-Butyl 1-oxa-6-azaspiro[3.3]heptane-6-carboxylate (CAS 1223573-41-8)
- (R)-1-(3,5-dimethylphenyl)ethan-1-amine (CAS 737713-28-9)
- 2-Hydroxy-4-((3-(N-hydroxyacetamido)propyl)amino)-2-(2-((3-(N-hydroxyacetamido)propyl)amino)-2-oxoethyl)-4-oxobutanoic acid (CAS 35418-52-1)
- 2-Azabicyclo[2.2.1]Heptane-3-carbonitrile (CAS 1824551-46-3)
- 20205-43-0 6,7-dimethyl-1H-indole-2,3-dione DTXSID80365245 (CAS 20205-43-0)
- Tirzepatide Impurity 18 (CAS CATO-C4X-324018)
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