(E)-3-(Oxazol-4-yl)acrylic acid CAS 28418-38-4
| CAS No. | 28418-38-4 |
| Molecular Formula | C6H5NO3 |
| Molecular Weight | 139.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (E)-3-(Oxazol-4-yl)acrylic 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.
(E)-3-(Oxazol-4-yl)acrylic acid (CAS 28418-38-4) is a high-purity analytical reference standard with the molecular formula C6H5NO3 and a molecular weight of 139.11 g/mol.
Based on its molecular formula C6H5NO3, (E)-3-(Oxazol-4-yl)acrylic 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 139.11 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), (E)-3-(Oxazol-4-yl)acrylic 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 | C6H5NO3 |
| Molecular Weight | 139.11 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Nitrogen Atoms | 1 |
Related E Standards
- (E)-3-(Oxazol-2-yl)acrylic acid (CAS 871722-51-9)
- 2-Methyl-1-(oxazol-2-yl)propan-1-one (CAS 898759-12-1)
- (2-Propyl-1,3-oxazol-5-yl)methanamine (CAS 1206975-63-4)
- N-(Oxazol-2-ylmethyl)propan-2-amine (CAS 1398504-16-9)
- [(3-Ethyl-1,2-oxazol-4-yl)methyl](methyl)amine (CAS 1512204-67-9)
- 1-(5-Ethyl-1,2-oxazol-3-yl)ethanamine (CAS 957187-55-2)
- 3-Butyl-1,2-oxazol-5-amine (CAS 95199-93-2)
- 3-(Oxazol-2-yl)propanoic acid (CAS 1092297-60-3)
Recommended Standards
- 2-(2-Furyl)-2-oxoacetamide (CAS 84522-17-8)
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- 2-(2-Nitrovinyl)-1H-imidazole (CAS 948905-46-2)
- 2-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)acetaldehyde (CAS 188985-04-8)
- 5,7-Dimethyladamantane-1,3-diamine Dihydrochloride (CAS 19385-96-7（free base）)
- Telaprevir Hydroxy Impurity (CAS 402959-36-8)
- 1-(1-(Methoxymethyl)cyclobutyl)-N-methylmethanamine (CAS 1565619-97-7)
- 2-(Dimethylphosphinyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzenamine (CAS 2577448-70-3)
- 3-(4-Propoxyphenyl)-1-propanol (CAS 307302-97-2)
- Methyl 9H-pyrrolo[2,3-b:5,4-c']dipyridine-6-carboxylate, 97% (CAS 946051-44-1)
- 6-Benzyl-2-(cyclohexyloxy)-5-methylpyrimidin-4(1H)-one (CAS 153815-93-1)
- 4-Butoxy-6-chloro-3-(hydroxymethyl)-2-propylisoquinolin-1(2H)-one (CAS 447420-12-4)
- 2-(Chloromethyl)-3-(difluoromethyl)-4-iodo-6-(trifluoromethyl)pyridine (CAS 1805549-11-4)
- Galanin Message Associated Peptide (44-59) amide (CAS 125455-59-6)
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