4-((3-Methoxyphenyl)amino)-4-oxobut-2-enoic acid CAS 31460-27-2
| CAS No. | 31460-27-2 |
| Molecular Formula | C11H11NO4 |
| Molecular Weight | 221.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-((3-Methoxyphenyl)amino)-4-oxobut-2-enoic acid is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-((3-Methoxyphenyl)amino)-4-oxobut-2-enoic acid (CAS 31460-27-2), molecular formula C11H11NO4 and molecular weight 221.21 g/mol, is a CATO reference standard with documented purity and traceability.
4-((3-Methoxyphenyl)amino)-4-oxobut-2-enoic acid (C11H11NO4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 4-((3-Methoxyphenyl)amino)-4-oxobut-2-enoic 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 | C11H11NO4 |
| Molecular Weight | 221.21 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Nitrogen Atoms | 1 |
Related Methoxyphenyl Standards
- 5-(4-Methoxyphenyl)-4,5-dihydro-1,2-oxazole-3-carboxylic acid (CAS 1018051-51-8)
- 3-(3-Methoxyphenyl)-4,5-dihydro-1,2-oxazole-5-carboxylic acid (CAS 1018143-20-8)
- 4-(2-Methoxyphenyl)-3-nitrobut-3-en-2-one (CAS 1417574-80-1)
- (2E)-4-[(2-Methoxyphenyl)amino]-4-oxobut-2-enoic acid (CAS 36847-94-6)
- (Z)-4-((2-Methoxyphenyl)amino)-4-oxobut-2-enoic acid (CAS 31460-26-1)
- (Z)-4-((4-methoxyphenyl)amino)-4-oxobut-2-enoic acid (CAS 24870-10-8)
- 3-(4-Methoxyphenyl)-4,5-dihydro-1,2-oxazole-5-carboxylic acid (CAS 473253-40-6)
- 3-[(3-methoxyphenyl)carbamoyl]prop-2-enoic acid (CAS 306935-71-7)
Recommended Standards
- 4-((3-Hydroxypropyl)amino)-3-nitrobenzonitrile (CAS 320406-08-4)
- 4-((4-Methoxyphenyl)amino)-4-oxobut-2-enoic acid (CAS 37902-60-6)
- 4-((2,6-Dimethylpyrimidin-4-yl)amino)-4-oxobut-2-enoic acid (CAS 797781-10-3)
- 4-((Benzyloxy)methyl)oxazolidine-2,5-dione (CAS 22831-98-7)
- 2-(4-Ethylphenyl)thiazole-5-carboxylic acid (CAS 886370-11-2)
- Ajugoside (CAS 52916-96-8)
- 3-(4-Isocyanatophenyl)-1-methyl-1H-pyrazole (CAS 921938-54-7)
- Amyloid Bri Protein (1-23) trifluoroacetate salt (CAS 717122-86-6)
- 1-Aminocyclohexanecarboxylic acid hydrochloride (CAS 39692-17-6)
- n-(4-Chloro-3-fluorobenzyl)-1-methoxypropan-2-amine (CAS 1247808-75-8)
- 4-Bromo-2-fluoro-α,α-dimethylbenzeneacetonitrile (CAS 749928-77-6)
- 3-Chloro-7-methoxy-1,2-benzisothiazole (CAS 136546-52-6)
- tert-Butyl 3-((6-hydroxyhexyl)oxy)propanoate (CAS 2324154-42-7)
- Autoinducing Peptide I trifluoroacetate salt (CAS 200010-29-3)
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