(Z)-4-(methylamino)-4-oxobut-2-enoic acid CAS 6936-48-7
| CAS No. | 6936-48-7 |
| Molecular Formula | C5H7NO3 |
| Molecular Weight | 129.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
(Z)-4-(methylamino)-4-oxobut-2-enoic acid (CAS 6936-48-7), molecular formula C5H7NO3 and molecular weight 129.11 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H7NO3, (Z)-4-(methylamino)-4-oxobut-2-enoic acid contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 129.11 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.
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.
Physical & Chemical Properties
| Molecular Formula | C5H7NO3 |
| Molecular Weight | 129.11 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
Related Z Standards
- (E)-4-(methylamino)-4-oxobut-2-enoic acid (CAS 124378-37-6)
- 3-((Methylamino)methyl)-1,2,4-oxadiazol-5-ol (CAS 1343301-86-9)
- 3-(Methylamino)imidazolidine-2,4-dione (CAS 220442-66-0)
- methyl 1-(methylamino)cyclopropane-1-carboxylate (CAS 119111-66-9)
- 1-(methylamino)cyclobutane-1-carboxylic acid (CAS 1251391-67-9)
- 5-(methylamino)-2,3-dihydropyridazin-3-one (CAS 1353498-86-8)
- 3-(Methylamino)cyclobutane-1-carboxylic acid (CAS 1384428-17-4)
- [1-(methylamino)cyclopentyl]methanol (CAS 1094072-11-3)
Recommended Standards
- (S)-Methyl 4,5-dihydrooxazole-4-carboxylate (CAS 53229-12-2)
- 1-(hydroxymethyl)pyrrolidine-2,5-dione (CAS 5146-68-9)
- (S)-4-Oxopyrrolidine-2-carboxylic acid (CAS 4347-18-6)
- 1-Carbamoylcyclopropanecarboxylic acid (CAS 6914-74-5)
- 3-(2-Fluorophenyl)-5-methyl-3H-[1,2,3]triazolo[4,5-b]pyridine (CAS 62490-31-7)
- 3-(5-Amino-3-(tert-butyl)-1H-pyrazol-1-yl)benzonitrile (CAS 876299-39-7)
- Ethyl 6-fluoro-8-methyl-4-(methylamino)quinoline-3-carboxylate (CAS 1315345-16-4)
- 1-(3,4-Dimethoxyphenyl)-4,4,4-trifluorobutane-1,3-dione (CAS 63458-98-0)
- 2,4,6-Trimethyl-N-propylaniline (CAS 356532-68-8)
- (2r)-2-[(5-chlorothiophen-2-yl)formamido]-3-methylbutanoic acid (CAS 1568148-38-8)
- 3-Bromo-N-isobutylbenzamide (CAS 333345-92-9)
- 3-(5-Amino-2H-benzo[d][1,2,3]triazol-2-yl)benzoic acid (CAS 873994-06-0)
- 2-(Chloromethyl)-4-(difluoromethyl)-5-iodopyridine-3-acetonitrile (CAS 1805195-67-8)
- Semaglutide impurity 233 (CAS CATO-C4X-2226233)
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