2-(Hydroxyiminomethyl)-1-methylpyridinium Methane Sulfonate CAS 154-97-2
| CAS No. | 154-97-2 |
| Molecular Formula | C7H9N2O |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(Hydroxyiminomethyl)-1-methylpyridinium Methane Sulfonate (CAS 154-97-2), molecular formula C7H9N2OCH3O3S and molecular weight 232.25 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-(Hydroxyiminomethyl)-1-methylpyridinium Methane Sulfonate (C7H9N2OCH3O3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 232.25 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), 2-(Hydroxyiminomethyl)-1-methylpyridinium Methane Sulfonate 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 | C7H9N2O CH3O3S |
| Molecular Weight | 232.25 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Recommended Standards
- 1-(6-Hydroxybenzofuran-7-yl)ethan-1-one (CAS 35085-99-5)
- 2,2,2-Trifluoro-N-(3-(methylamino)propyl)acetamide (CAS 124219-33-6)
- 1-(1-Butylcyclopentyl)pyrrolidine (CAS 58665-12-6)
- Diethyl 4-bromoisophthalate (CAS 56984-35-1)
- Benzoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, 4-(1,1-dimethylethyl)-2-[5-(1,1-dimethylethyl)-2,3-dihydro-2-oxo-3-benzofuranyl]phenyl ester (CAS 1261240-30-5)
- 7a-ethyldihydro-1h,3h,5h-oxazolo(3,4-c)oxazole 82001-53-4 AR-1H3097 (CAS 82001-53-4)
- Haloperidol Impurity 33 (CAS CATO-C4X-146133)
- tert-Butyldimethyl(thiophen-2-yl)silane (CAS 163079-25-2)
- (S)-2-((2-Chloropyrimidin-4-yl)amino)-2-methylbutanoic acid (CAS 1417421-83-0)
- [D-Phe22]Semaglutide (CAS CATO-C4X-2226222)
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