1-Methyl-2-pyridin-2-ylpyridinium iodide CAS 77972-47-5
| CAS No. | 77972-47-5 |
| Molecular Formula | C11H11N2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1-Methyl-2-pyridin-2-ylpyridinium iodide is closely related to a nitrogen-containing heterocyclic scaffold, a nitrile group, iodine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 1-Methyl-2-pyridin-2-ylpyridinium iodide (CAS 77972-47-5), a certified reference material (molecular formula C11H11N2I, MW 298.12 g/mol) for analytical method development and quality control.
Based on its molecular formula C11H11N2I, 1-Methyl-2-pyridin-2-ylpyridinium iodide contains a nitrogen-containing heterocyclic scaffold, a nitrile group, iodine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 298.12 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), 1-Methyl-2-pyridin-2-ylpyridinium iodide 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 | C11H11N2 I |
| Molecular Weight | 298.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 2 |
Related Methyl Standards
- 3-[(E)-2-(Pyridin-3-yl)ethenyl]-1,2-dihydroquinoxalin-2-one (CAS 1000169-10-7)
- 2-(pyridin-2-ylsulfanyl)acetic acid (CAS 10002-29-6)
- 4-(Pyridin-3-yloxy)benzenesulfonic acid (CAS 1000340-09-9)
- 2-(2-Oxo-2-(pyridin-4-yl)ethylidene)thiazolidin-4-one (CAS 1000932-15-9)
- 2-[2-oxo-2-(pyridin-3-yl)ethylidene]-1,3-thiazolidin-4-one (CAS 1000932-62-6)
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- 1-Methyl-4-(pyridin-2-ylmethyl)piperazine (CAS 100158-57-4)
Recommended Standards
- 3-Hydroxy-3-(pyridin-3-yl)propanenitrile (CAS 380913-63-3)
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- 2-Bromomethyl-1,3-dioxolane (CAS 4360-63-8)
- 2-(2-Chlorophenyl)-8-ethylquinoline-4-carbonyl chloride (CAS 1160261-20-0)
- 2-amino-4-methyl-1-(thiophen-2-yl)pentan-1-ol (CAS 1181447-86-8)
- 2-chloro-N-(2,4-dichlorobenzyl)-4-(trifluoromethyl)nicotinamide (CAS 288246-19-5)
- Ethyl 4,5-dibromothiophene-2-carboxylate (CAS 62224-25-3)
- Methyl (6aR,9R)-7-methyl-4,6,6a,7,8,9-hexahydroindolo[4,3-fg]quinoline-9-carboxylate hydrochloride (CAS 88840-18-0)
- Undec-10-en-1-yl 2-bromo-2-methylpropanoate (CAS 255727-66-3)
- [3-31]-Semaglutide D (Sodium salt) (CAS CATO-C4X-2226119)
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