5-(3,4-Dimethoxyphenyl)oxazole-4-carboxylic acid CAS 89205-08-3
| CAS No. | 89205-08-3 |
| Molecular Formula | C12H11NO5 |
| Molecular Weight | 249.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-(3,4-Dimethoxyphenyl)oxazole-4-carboxylic acid (CAS 89205-08-3), a certified reference material (molecular formula C12H11NO5, MW 249.22 g/mol) for analytical method development and quality control.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 5-(3,4-Dimethoxyphenyl)oxazole-4-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 249.22 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
As a certified reference material (CRM), 5-(3,4-Dimethoxyphenyl)oxazole-4-carboxylic 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 | C12H11NO5 |
| Molecular Weight | 249.22 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 1 |
Related Dimethoxyphenyl Standards
- 3-(3,4-Dimethoxyphenyl)-4-nitro-1H-pyrazole (CAS 1707374-96-6)
- 3-(3,5-Dimethoxyphenyl)-4-nitro-1H-pyrazole (CAS 1707374-97-7)
- 5-(2,4-Dimethoxyphenyl)isoxazole-3-carboxylic Acid (CAS 33282-09-6)
- 5-(2,5-Dimethoxyphenyl)isoxazole-3-carboxylic Acid (CAS 953752-64-2)
- 5-(3,4-dimethoxyphenyl)isoxazole-3-carboxylic acid (CAS 33282-17-6)
- 2-(5-(2,3-Dimethoxyphenyl)-1,2,4-oxadiazol-3-yl)ethan-1-amine (CAS 1306637-06-8)
- 4-(2,4-Dimethoxyphenyl)-1,3-dimethyl-4,5-dihydro-1H-1,2,4-triazol-5-one (CAS 861206-35-1)
- 2-(3,4-Dimethoxyphenyl)thiazole-5-carbaldehyde (CAS 914348-85-9)
Recommended Standards
- 5-(4-Methoxyphenoxy)-1-methyl-4-nitro-1H-imidazole (CAS 95792-71-5)
- 5,7-Dimethoxy-2-methylisoquinoline-1,3,4(2H)-trione (CAS 74826-32-7)
- 5,7-dimethoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 91570-21-7)
- 5-((5-Methylfuran-3-carboxamido)methyl)furan-3-carboxylic acid (CAS 447413-31-2)
- N-(Quinolin-2-ylmethylene)-4-(trifluoromethyl)aniline (CAS 88346-81-0)
- Chitobiose Hydrochloride (CAS 115350-24-8)
- N-(4-fluorophenyl)-2-((4-methyl-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 212074-82-3)
- UNC2881 (CAS 1493764-08-1)
- 11-([1,1'-Biphenyl]-4-yl)-5-bromo-11H-benzo[a]carbazole (CAS 1210469-50-3)
- 6-Aza-spiro[3.4]octan-1-ol hydrochloride (CAS 1823886-51-6)
- (2e)-3-(4-{[(4-sulfamoylphenyl)methyl]sulfamoyl}phenyl)prop-2-enoic acid (CAS 795293-20-8)
- 1-Phenylcyclobutanecarboxamide (CAS 17380-65-3)
- (9H-Fluoren-9-yl)methyl (9-((2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-6-yl)carbamate (CAS 87424-20-2)
- MCH-Gene-Overprinted-Polypeptide-14 (rat) (H-4746.0500) (CAS 182917-44-8)
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