Methyl 2-({[(4Z)-1-(4-chlorophenyl)-3-ethoxy-5-oxo-4,5-dihydro-1H-pyrazol-4-ylidene]methyl}amino)acetate CAS 338751-20-5
| CAS No. | 338751-20-5 |
| Molecular Formula | C15H16ClN3O4 |
| Molecular Weight | 337.76 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Methyl 2-({[(4Z)-1-(4-chlorophenyl)-3-ethoxy-5-oxo-4,5-dihydro-1H-pyrazol-4-ylidene]methyl}amino)acetate 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.
Methyl 2-({[(4Z)-1-(4-chlorophenyl)-3-ethoxy-5-oxo-4,5-dihydro-1H-pyrazol-4-ylidene]methyl}amino)acetate (CAS 338751-20-5) is a high-purity analytical reference standard with the molecular formula C15H16ClN3O4 and a molecular weight of 337.76 g/mol.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, Methyl 2-({[(4Z)-1-(4-chlorophenyl)-3-ethoxy-5-oxo-4,5-dihydro-1H-pyrazol-4-ylidene]methyl}amino)acetate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 337.76 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C15H16ClN3O4 |
| Molecular Weight | 337.76 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 |
| 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.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Recommended Standards
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