4-{[(5-chloro-2-hydroxyphenyl)amino]methylidene}-3-methyl-4,5-dihydro-1H-pyrazol-5-one CAS 339020-95-0
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 339020-95-0 |
| Molecular Formula | C11H10ClN3O2 |
| Molecular Weight | 251.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-{[(5-chloro-2-hydroxyphenyl)amino]methylidene}-3-methyl-4,5-dihydro-1H-pyrazol-5-one (CAS 339020-95-0) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C11H10ClN3O2. Molecular weight: 251.67 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C11H10ClN3O2 |
| Molecular Weight | 251.67 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related chloro Standards
- 4-Chloro-1-(4-methylbenzyl)-3-nitro-1H-pyrazole (CAS 1005577-45-6)
- Methyl 3-chloro-5-cyclopropylpyrazolo[1,5-a]pyrimidine-7-carboxylate (CAS 1018053-16-1)
- 1-(2-Chloro-4-nitrophenyl)-3,5-dimethyl-1H-pyrazole (CAS 103862-71-1)
- Methyl 7-chloro-4-hydroxy-8-methylquinoline-2-carboxylate (CAS 1065074-49-8)
- 2-(6-Chloro-2-methyl-4-oxoquinolin-1(4H)-yl)acetic acid (CAS 1083197-18-5)
- 2-(8-Chloro-2-methyl-4-oxoquinolin-1(4H)-yl)acetic acid (CAS 1083197-22-1)
- 2-Chloro-N-(furan-2-ylmethyl)-6-methylpyrimidine-4-carboxamide (CAS 1089334-43-9)
- Methyl 4-chloro-7-methoxyquinoline-3-carboxylate (CAS 1123169-50-5)
Recommended Standards
- 3-Chloro-6-(3,5-dimethyl-pyrazol-1-yl)-pyridine-2-carboxylic acid (CAS 882223-35-0)
- 4-Amino-3-((4-chlorophenyl)amino)-6-methyl-1,2,4-triazin-5(4H)-one (CAS 22285-10-5)
- 3-[5-(4-chlorophenyl)-1,3-oxazol-2-yl]propanoic acid (CAS 23464-95-1)
- 2-(3-Chlorophenyl)-3,8-dimethylquinoline-4-carboxylic acid (CAS 932929-06-1)
- alpha-Methyl-2,3-dimethoxybenzyl Alcohol (CAS 6848-73-3)
- Tert-butyl 4-(2-sulfamoylethyl)piperazine-1-carboxylate (CAS 1354952-77-4)
- 1-Phenyl-7-(pyridin-3-yl)-5-(trifluoromethyl)-1H-benzo[d]imidazole (CAS 159725-99-2)
- Benzyl ethyl(piperidin-4-ylmethyl)carbamate (CAS 1353966-19-4)
- 1-Phenyl-1-(3-(trifluoromethyl)phenyl)propan-1-ol (CAS 56430-99-0)
- (β-Asp5)-Delta-Sleep Inducing Peptide (CAS 82602-88-8)
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