| CAS No. | 27268-07-1 |
| Molecular Formula | C13H11ClN2O2 |
| Molecular Weight | 262.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
(2e)-3-(5-Chloro-3-methyl-1-phenyl-1h-pyrazol-4-yl)prop-2-enoic acid (C13H11ClN2O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
(2e)-3-(5-Chloro-3-methyl-1-phenyl-1h-pyrazol-4-yl)prop-2-enoic acid (CAS 27268-07-1) is a high-purity analytical reference standard with the molecular formula C13H11ClN2O2 and a molecular weight of 262.69 g/mol.
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), (2e)-3-(5-Chloro-3-methyl-1-phenyl-1h-pyrazol-4-yl)prop-2-enoic acid 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.
| Molecular Formula | C13H11ClN2O2 |
| Molecular Weight | 262.69 g/mol |
| Appearance | Pale yellow to 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 DMSO, DMF, methanol |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |