2-Chloro-3-iodopyrazine CAS 191340-85-9
| CAS No. | 191340-85-9 |
| Molecular Formula | C4H2ClIN2 |
| Molecular Weight | 240.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2-Chloro-3-iodopyrazine 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.
2-Chloro-3-iodopyrazine (CAS 191340-85-9) is a high-purity analytical reference standard with the molecular formula C4H2ClIN2 and a molecular weight of 240.43 g/mol.
Based on its molecular formula C4H2ClIN2, 2-Chloro-3-iodopyrazine contains a nitrile group, chlorine/iodine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 240.43 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C4H2ClIN2 |
| Molecular Weight | 240.43 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 DMSO, DMF, methanol |
| 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.) | 2011 |
| Halogen Content | Cl/I-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 2-Chloro-5-iodopyrazine (CAS 1057216-55-3)
- 4-Chloro-2-iodopyrimidine (CAS 1108165-28-1)
- 2-Chloro-6-iodopyrazine (CAS 120531-35-3)
- 5-Chloro-4-iodopyrimidine (CAS 1261473-90-8)
- 5-Chloro-3-iodopyridazine (CAS 1616070-38-2)
- 2-Chloro-4-iodopyrimidine (CAS 395082-55-0)
- 2-Chloro-5-iodopyrimidine (CAS 32779-38-7)
- 4-Chloro-5-iodopyrimidine (CAS 63558-65-6)
Recommended Standards
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- 5-Bromo-1-methyl-4-(trifluoromethyl)-1H-pyrazole (CAS 1783749-68-7)
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- Cefazolin Impurity 41 (CAS CATO-C4X-157741)
- 2-Butylidenehydrazinecarboxamide (CAS 13183-21-6)
- Semaglutide Impurity 177 (CAS CATO-C4X-2226177)
Why CATO?
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