(4E)-1-[3-Chloro-5-(trifluoromethyl)pyridin-2-yl]-4-[(dimethylamino)methylidene]-3-ethoxy-4,5-dihydro-1H-pyrazol-5-one CAS 338420-92-1
| CAS No. | 338420-92-1 |
| Molecular Formula | C14H14ClF3N4O2 |
| Molecular Weight | 362.73 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (4E)-1-[3-Chloro-5-(trifluoromethyl)pyridin-2-yl]-4-[(dimethylamino)methylidene]-3-ethoxy-4,5-dihydro-1H-pyrazol-5-one is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
(4E)-1-[3-Chloro-5-(trifluoromethyl)pyridin-2-yl]-4-[(dimethylamino)methylidene]-3-ethoxy-4,5-dihydro-1H-pyrazol-5-one (CAS 338420-92-1) is a high-purity analytical reference standard with the molecular formula C14H14ClF3N4O2 and a molecular weight of 362.73 g/mol.
Structurally, (4E)-1-[3-Chloro-5-(trifluoromethyl)pyridin-2-yl]-4-[(dimethylamino)methylidene]-3-ethoxy-4,5-dihydro-1H-pyrazol-5-one (C14H14ClF3N4O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 362.73 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), (4E)-1-[3-Chloro-5-(trifluoromethyl)pyridin-2-yl]-4-[(dimethylamino)methylidene]-3-ethoxy-4,5-dihydro-1H-pyrazol-5-one 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 | C14H14ClF3N4O2 |
| Molecular Weight | 362.73 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 4 |
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Recommended Standards
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- Opicapone Impurity 10 (CAS CATO-C4X-240410)
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- [1,2-Ethanediylbis[dimethylphosphine-κP]]methyl(4-methylphenyl)palladium (CAS 680621-10-7)
- 1-(Difluoromethoxy)-2-fluoronaphthalene (CAS 878998-79-9)
- Ethyl 6-(tert-butyl)-4-oxo-4H-pyran-3-carboxylate (CAS 134653-81-9)
- N-Butyryl-L-homoserine Lactone (CAS 67605-85-0)
- 4-Amino-3-mesitylbutanoic acid (CAS 28311-40-2)
- 2-Propylfuran (CAS 4229-91-8)
- 2-Bromo-3-chloro-4-methyl-5-nitropyridine (CAS 1805519-05-4)
- Tofacitinib Impurity 74 (CAS CATO-C4X-107974)
- 1-(Cyclopropylmethyl)-4-methyl-1h-pyrazol-3-amine (CAS 1487354-06-2)
- (1R,3R)-3-Hydroxycyclohexyl 4-methylbenzenesulfonate (CAS 132961-65-0)
- Biotinyl-Pancreatic Polypeptide (human) trifluoroacetate salt (CAS 1816258-36-2)
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