(4Z)-1-(4-Chlorophenyl)-3-ethoxy-4-{[(4-methoxyphenyl)amino]methylidene}-4,5-dihydro-1H-pyrazol-5-one CAS 338751-08-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 338751-08-9 |
| Molecular Formula | C19H18ClN3O3 |
| Molecular Weight | 371.82 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(4Z)-1-(4-Chlorophenyl)-3-ethoxy-4-{[(4-methoxyphenyl)amino]methylidene}-4,5-dihydro-1H-pyrazol-5-one (CAS 338751-08-9) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C19H18ClN3O3. Molecular weight: 371.82 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C19H18ClN3O3 |
| Molecular Weight | 371.82 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 | 3 |
Related Z Standards
- 1-(4-Chlorophenyl)-2-phenylimidazo[2,1-b]quinazolin-5(1H)-one (CAS 62481-21-4)
- 2-(1-(4-Chlorophenyl)-4-oxo-1,4-dihydro-5H-pyrazolo[3,4-d]pyrimidin-5-yl)-N-cyclopentylacetamide (CAS 852441-18-0)
- 3-(4-Chlorophenyl)-5-(1-phenyl-1H-pyrazol-5-yl)benzo[c]isoxazole (CAS 321998-10-1)
- 5-[(Z)-2-(2-Chlorophenyl)diazen-1-yl]-4-phenyl-2-(pyridin-4-yl)pyrimidine (CAS 339279-60-6)
- 3-(4-Chlorophenyl)-9-(3-hydroxypropyl)-9,10-dihydro-4H,8H-chromeno[8,7-e][1,3]oxazin-4-one (CAS 1010933-62-6)
- 1119391-59-1 3-(4-chlorophenyl)-4-imino-6-(thiophen-2-yl)-1H,2H,3H,4H,7H,8H-[1,3]diazino[5,4-d]pyrimidine-2,8-dione MS-10940 (CAS 1119391-59-1)
- 1-(4-Chlorophenyl)-3-(4-ethyl-5-(propa-1,2-dien-1-ylthio)-4H-1,2,4-triazol-3-yl)pyridazin-4(1H)-one (CAS 478077-61-1)
- 1-{[5-(2-chlorophenyl)-1,2-oxazol-3-yl]methyl}-4-(2-fluorophenyl)piperazine (CAS 339019-77-1)
Recommended Standards
- Ethyl (E)-2-(4-chlorophenyl)-7-(2-(dimethylamino)vinyl)-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate (CAS 1306753-57-0)
- tert-Butyl 4-(2-chloropyrimidin-4-yloxy)naphthalen-1-ylcarbamate (CAS 1229607-86-6)
- 2-((2-Chloro-6-fluorobenzyl)thio)-7-(pyridin-2-yl)-[1,2,4]triazolo[1,5-a]pyrimidine (CAS 338751-46-5)
- 4-(2,6-Dichlorophenyl)butan-2-one (CAS 227027-70-5)
- (R)-6-Methoxy-5-methyl-1,2,3,4-tetrahydronaphthalen-1-amine (CAS 1213167-23-7)
- (R)-SYNPHOS (CAS 445467-61-8)
- Acenaphth[1,2-α]anthracene (CAS 205-83-4)
- Sodium cobalticarborane (CAS 99492-72-5)
- 2-(3,4-Dichlorophenyl)-2-(phenethylamino)-acetonitrile hydrochloride (CAS 1440535-58-9)
- Bradykinin-Like Neuropeptide (Aplysia californica) (H-1654.0001) (CAS 165174-60-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com