4-(5-(4-Methoxyphenyl)-3-(thiophen-2-yl)-4,5-dihydro-1H-pyrazol-1-yl)-4-oxobutanoic acid CAS 332390-97-3
| CAS No. | 332390-97-3 |
| Molecular Formula | C18H18N2O4S |
| Molecular Weight | 358.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-(5-(4-Methoxyphenyl)-3-(thiophen-2-yl)-4,5-dihydro-1H-pyrazol-1-yl)-4-oxobutanoic acid (CAS 332390-97-3), molecular formula C18H18N2O4S and molecular weight 358.41 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 4-(5-(4-Methoxyphenyl)-3-(thiophen-2-yl)-4,5-dihydro-1H-pyrazol-1-yl)-4-oxobutanoic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 358.41 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures 4-(5-(4-Methoxyphenyl)-3-(thiophen-2-yl)-4,5-dihydro-1H-pyrazol-1-yl)-4-oxobutanoic acid 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 | C18H18N2O4S |
| Molecular Weight | 358.41 g/mol |
| 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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Methoxyphenyl Standards
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- (3Z)-3-{[(4-methoxyphenyl)methoxy]imino}-1-phenyl-2,3-dihydro-1H-indol-2-one (CAS 478261-38-0)
- Methyl 1-(2-(5-(4-methoxyphenyl)isoxazol-3-yl)acetyl)piperidine-4-carboxylate (CAS 952986-95-7)
- 2-((6-(2-Methoxyphenyl)pyridazin-3-yl)thio)-N-(thiazol-2-yl)acetamide (CAS 893980-82-0)
- N-(4-Methoxyphenyl)-3-phenyl-5-propylpyrazolo[1,5-a]pyrimidin-7-amine (CAS 890626-72-9)
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- 2-(4-Methoxyphenyl)-1H-imidazo[4,5-b]phenazine 5,10-dioxide (CAS 303059-21-4)
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Recommended Standards
- 4-(3,4-Dimethyl-2,5-dioxo-3-phenylpyrrolidin-1-yl)benzenesulfonamide (CAS 28103-55-1)
- 4,5-Dimethoxy-2-(trimethylsilyl)phenyl Trifluoromethanesulfonate (CAS 866252-52-0)
- 4-(3,4-Dimethoxyphenyl)-3-methyl-1-(phenylsulfonyl)-1H-pyrazole (CAS 321526-10-7)
- 4-[4-(2-Thienyl)-2-pyrimidinyl]phenyl benzenecarboxylate (CAS 477862-90-1)
- 4-(3-Bromophenyl)-1-methyl-1h-pyrazole (CAS 141938-40-1)
- (2S)-2-[(4S)-4,5-Dihydro-4-phenyl-2-oxazolyl]-1-(diphenylphosphino)piperidine (CAS 2757084-46-9)
- N-(2-Methoxybenzyl)-3-(2-methoxyethoxy)aniline (CAS 1040686-32-5)
- 3-(4-Chloro-2-methylphenyl)-2-{[(2,6-dichlorophenyl)sulfanyl]methyl}-3,4-dihydroquinazolin-4-one (CAS 338959-62-9)
- Ethyl 4-(aminomethyl)-1-methylpiperidine-4-carboxylate (CAS 135380-48-2)
- 2-Sulfamoyl-1H-imidazole-4-carboxylic acid (CAS 103054-45-1)
- 1-Benzyl-3-bromo-5-methoxy-1H-1,2,4-triazole (CAS 1415719-60-6)
- 6-Methoxypyridine-3-carbothioanide (CAS 175277-49-3)
- 3-benzylpyrrolidin-3-ol, trifluoroacetic acid (CAS 1803591-70-9)
- Semaglutide impurity 58 (CAS CATO-C4X-222658)
Why CATO?
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