4-(4-Chlorophenyl)-2-(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)-4-oxobutanoic acid CAS 138560-56-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 138560-56-2 |
| Molecular Formula | C20H17ClN2O4 |
| Molecular Weight | 384.81 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-(4-Chlorophenyl)-2-(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)-4-oxobutanoic acid (CAS 138560-56-2), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C20H17ClN2O4. Molecular weight: 384.81 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C20H17ClN2O4 |
| Molecular Weight | 384.81 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorophenyl Standards
- 1-(3-(3-(3-Chlorophenyl)-1,2,4-oxadiazol-5-yl)pyridin-2-yl)piperidine-4-carboxylic acid (CAS 1260934-87-9)
- 1-(4-Chlorophenyl)-2-(4-(3-(trifluoromethyl)phenyl)piperazin-1-yl)ethan-1-ol (CAS 400075-68-5)
- (E)-1-[2-(4-Chlorophenyl)-4-methyl-1,3-thiazol-5-yl]-3-(2-nitrophenyl)-2-propen-1-one (CAS 1211932-77-2)
- 3-((4-(2-Chlorophenyl)piperazin-1-yl)sulfonyl)-1H-pyrazole-4-carbohydrazide (CAS 1370592-49-6)
- 2-((2-(2-(3-Chlorophenyl)thiazol-4-yl)ethyl)amino)-5-nitrobenzonitrile (CAS 861207-14-9)
- 4-((4-Chlorophenyl)thio)-3-nitro-N-phenylbenzamide (CAS 303988-25-2)
- 2-(2-Chlorophenyl)-1-{4-[6-(trifluoromethyl)pyrimidin-4-yl]piperazin-1-yl}ethan-1-one (CAS 1775313-01-3)
- 1-[(4-Chlorophenyl)methyl]-3-(pyrrolidine-1-carbonyl)-6-(trifluoromethyl)-1,2-dihydropyridin-2-one (CAS 551921-72-3)
Recommended Standards
- N-(1-Aza-2-(1,3-dioxoindan-2-yl)prop-1-enyl)-2-(4-chloro-2-methylphenoxy)ethanamide (CAS 1024693-06-8)
- 4-((5-Chloro-6-oxo-1-(p-tolyl)-1,6-dihydropyridazin-4-yl)oxy)-3-ethoxybenzaldehyde (CAS 881580-97-8)
- dimethyl 2-[(2-chloro-1,3-thiazol-5-yl)methyl]-2-(2-nitrophenyl)malonate (CAS 860786-11-4)
- 3-(Pyrrolidin-1-yl)-6-(4-((2-(trifluoromethyl)phenyl)sulfonyl)piperazin-1-yl)pyridazine (CAS 1226440-85-2)
- Ethyl 2,2-difluoro-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetate (CAS 1683545-35-8)
- 727379-97-7 13C-Lactate (1-13C)Lactate (CAS 727379-97-7)
- Ethyl thieno[2,3-b]pyridine-5-carboxylate (CAS 99429-77-3)
- 2-Amino-2-(3-chloro-4,5-dihydroisoxazol-5-yl)acetic acid (CAS 52583-41-2)
- 7-Fluoro-1,2,3,4-tetrahydronaphthalen-2-amine hydrochloride (CAS 1884425-10-8)
- Semaglutide impurity 83 (CAS CATO-C4X-222683)
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