3-Ethyl 5-methyl 2-chloro-6-methylpyridine-3,5-dicarboxylate CAS 1239731-83-9
| CAS No. | 1239731-83-9 |
| Molecular Formula | C11H12ClNO4 |
| Molecular Weight | 257.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 257.67 g/mol gives 3-Ethyl 5-methyl 2-chloro-6-methylpyridine-3,5-dicarboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 3-Ethyl 5-methyl 2-chloro-6-methylpyridine-3,5-dicarboxylate (CAS 1239731-83-9), a certified reference material (molecular formula C11H12ClNO4, MW 257.67 g/mol) for analytical method development and quality control.
Structurally, 3-Ethyl 5-methyl 2-chloro-6-methylpyridine-3,5-dicarboxylate (C11H12ClNO4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 257.67 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.
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 | C11H12ClNO4 |
| Molecular Weight | 257.67 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 sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
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