(4Z)-1-(4-Chlorophenyl)-3-ethoxy-4-({[(pyridin-3-yl)methyl]amino}methylidene)-4,5-dihydro-1H-pyrazol-5-one CAS 338751-19-2
| CAS No. | 338751-19-2 |
| Molecular Formula | C18H17ClN4O2 |
| Molecular Weight | 356.81 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(4Z)-1-(4-Chlorophenyl)-3-ethoxy-4-({[(pyridin-3-yl)methyl]amino}methylidene)-4,5-dihydro-1H-pyrazol-5-one (C18H17ClN4O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, 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).
(4Z)-1-(4-Chlorophenyl)-3-ethoxy-4-({[(pyridin-3-yl)methyl]amino}methylidene)-4,5-dihydro-1H-pyrazol-5-one (CAS 338751-19-2), molecular formula C18H17ClN4O2 and molecular weight 356.81 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures (4Z)-1-(4-Chlorophenyl)-3-ethoxy-4-({[(pyridin-3-yl)methyl]amino}methylidene)-4,5-dihydro-1H-pyrazol-5-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C18H17ClN4O2 |
| Molecular Weight | 356.81 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related Z Standards
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Recommended Standards
- 7-Chloro-5-methyl-2-(2-(1-methyl-1H-benzo[d]imidazol-2-yl)ethyl)-2,3-dihydro-1H-pyrrolo[3,4-c]pyridine-1,6(5H)-dione (CAS 1628618-37-0)
- (R)-7-chloro-6-methoxy-4-((1-(pyridin-2-yl)ethyl)amino)quinoline-3-carboxamide (CAS 2444608-43-7)
- benzyl (2S)-2-{8-chloroimidazo[1,5-a]pyrazin-3-yl}pyrrolidine-1-carboxylate (CAS 1418307-18-2)
- 9-(4-Chloro-6-phenyl-1,3,5-triazin-2-yl)-9H-carbazole (CAS 1268244-56-9)
- (3-Fluoropyrrolidin-2-yl)methanol (CAS 1423029-26-8)
- Tert-butyl n-[(1-amino-2-methylcyclohexyl)methyl]carbamate (CAS 1269152-52-4)
- cAMP Dependent PK Inhibitor (5-24) (CAS 99534-03-9)
- Emtricitabine Impurity 31 (CAS 151722-06-4)
- Lesinurad Impurity 1 (CAS 1533519-98-0)
- 4-(2,4-Dichlorophenyl)-5-[(Z)-2-phenyldiazen-1-yl]-2-(pyridin-3-yl)pyrimidine (CAS 338747-39-0)
- Methyl 3-amino-2,4-dimethylbenzoate (CAS 24812-89-3)
- Ethyl 2-(4-methyl-1h-pyrazol-1-yl)propanoate (CAS 1005650-04-3)
- (E)-3-(4-Amino-3,5-dimethylphenyl)acrylonitrile Hydrochloride (CAS 661489-23-2)
- Semaglutide impurity 331 (CAS CATO-C4X-2226231)
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