4-{[(5-chloro-2-hydroxyphenyl)amino]methylidene}-4,5-dihydro-1H-pyrazol-5-one CAS 339020-79-0
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 339020-79-0 |
| Molecular Formula | C10H8ClN3O2 |
| Molecular Weight | 237.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-{[(5-chloro-2-hydroxyphenyl)amino]methylidene}-4,5-dihydro-1H-pyrazol-5-one (CAS 339020-79-0) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C10H8ClN3O2. Molecular weight: 237.64 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C10H8ClN3O2 |
| Molecular Weight | 237.64 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-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
- 3-Chloro-5-cyclopropylpyrazolo[1,5-a]pyrimidine-7-carboxylic acid (CAS 1011354-08-7)
- 2-Chloro-8-methoxyquinoline-3-carboxylic acid (CAS 1017157-83-3)
- 6-Chloro-4-hydroxy-2-methylquinoline-3-carboxylic acid (CAS 103566-34-3)
- 1-(3-Chloro-2-methylphenyl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1042534-76-8)
- 1-(3-Chloro-4-methylphenyl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1042604-53-4)
- 2-Chloro-6-hydroxy-7-methoxyquinoline-3-carbaldehyde (CAS 1046138-52-6)
- Methyl 8-chloro-4-hydroxyquinoline-2-carboxylate (CAS 1065074-57-8)
- 2-(8-Chloro-4-oxoquinolin-1(4H)-yl)acetic acid (CAS 1092288-62-4)
Recommended Standards
- 3-Chloro-8-methoxyquinoline-6-carboxylic acid (CAS 2639205-57-3)
- 4-Acetyl-4-chloro-2-phenyloxazol-5(4H)-one (CAS 90127-57-4)
- 3-Chloro-6-methoxyisoquinoline-4-carboxylic acid (CAS 2386532-11-0)
- 4-Chloro-7-fluoro-6-nitroquinazoline hydrochloride (CAS 1000397-30-7)
- N-(2,5-Dimethoxyphenyl)-2-methoxybenzamide (CAS 313373-36-3)
- 2-[(tert-butoxy)methyl]benzoic acid (CAS 857005-12-0)
- tert-Butyl ((1-(2-aminoacetyl)pyrrolidin-2-yl)methyl)(methyl)carbamate (CAS 1353961-93-9)
- 2λ4δ2-Benzo[1,2-c:4,5-c′]bis[1,2,5]thiadiazole, 4,8-bis[5-bromo-4-(2-octyldodecyl)-2-thienyl]- (CAS 1374601-35-0)
- (4-Aminopiperidin-1-yl)(piperidin-1-yl)methanone hydrochloride (CAS 651056-87-0)
- Gastric Inhibitory Polypeptide (6-30) amide (human) (CAS 1139691-72-7)
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