4-({2-[4-(Methoxycarbonyl)-3-phenyl-5-isoxazolyl]vinyl}amino)benzenecarboxylic acid CAS 303995-80-4
| CAS No. | 303995-80-4 |
| Molecular Formula | C20H16N2O5 |
| Molecular Weight | 364.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C20H16N2O5, 4-({2-[4-(Methoxycarbonyl)-3-phenyl-5-isoxazolyl]vinyl}amino)benzenecarboxylic acid contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 364.35 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies 4-({2-[4-(Methoxycarbonyl)-3-phenyl-5-isoxazolyl]vinyl}amino)benzenecarboxylic acid (CAS 303995-80-4), a certified reference material (molecular formula C20H16N2O5, MW 364.35 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-({2-[4-(Methoxycarbonyl)-3-phenyl-5-isoxazolyl]vinyl}amino)benzenecarboxylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C20H16N2O5 |
| Molecular Weight | 364.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
Related Methoxycarbonyl Standards
- 2-((3,5-Bis(methoxycarbonyl)phenyl)carbamoyl)cyclohexane-1-carboxylic acid (CAS 497060-80-7)
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- Methyl 3-[(2-{[2-(methoxycarbonyl)phenyl]sulfanyl}acetyl)amino]-2-thiophenecarboxylate (CAS 477869-13-9)
- 7-[(2S)-2-[(Methoxycarbonyl)amino]-3-methyl-1-oxobutyl]-1,4-dithia-7-azaspiro[4.4]nonane-8-carboxylic acid (CAS 1296797-34-6)
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Recommended Standards
- 2-Methyl-4-(3-(4-nitrophenyl)acrylamido)benzene-1-sulfonyl fluoride (CAS 21320-85-4)
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- 2-[3-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)-2-methoxypropyl]-2,3-dihydro-1H-isoindole-1,3-dione (CAS 856832-79-6)
- 5-(2,2-Dimethyl-1,3-dioxolan-4-yl)-3-hydroxy-4-(2-(4-methoxyphenyl)-2-oxoethoxy)furan-2(5H)-one (CAS 866042-74-2)
- 4-Chloro-6-(2-methyl-1H-imidazol-1-yl)pyrimidine (CAS 941294-31-1)
- Benzyl octahydro-1H-pyrrolo[3,2-c]pyridine-1-carboxylate (CAS 1196156-47-4)
- Diethyl cyclopropylphosphonate (CAS 945459-87-0)
- 2-(3-Nitrobenzamido)-2-oxoethyl 1-(3-fluorophenyl)cyclopentane-1-carboxylate (CAS 733000-36-7)
- Rosuvastatin Impurity 252 (CAS 587855-03-6)
- 3-Oxabicyclo[3.1.0]Hexan-6-ol (CAS 2415382-71-5)
- 1-Bromo-2-(difluoromethyl)-4-nitrobenzene (CAS 1261477-23-9)
- Methyl 3-Hydroxy-2-nitrobenzoate (CAS 89942-77-8)
- (1'RS,2'S)-Nicotine 1,1'-Di-N-Oxide [20% in ethanol] (CAS 129547-84-8)
- Semaglutide (CAS CATO-C4X-2226105)
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