5-(3,4-Dimethoxyphenyl)oxazole CAS 73663-61-3
| CAS No. | 73663-61-3 |
| Molecular Formula | C11H11NO3 |
| Molecular Weight | 205.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 5-(3,4-Dimethoxyphenyl)oxazole (C11H11NO3) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
5-(3,4-Dimethoxyphenyl)oxazole (CAS 73663-61-3), molecular formula C11H11NO3 and molecular weight 205.21 g/mol, is a CATO reference standard with documented purity and traceability.
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 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 | C11H11NO3 |
| Molecular Weight | 205.21 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.) | 1978 |
| Nitrogen Atoms | 1 |
Related Dimethoxyphenyl Standards
- 3-(3,4-Dimethoxyphenyl)-1H-1,2,4-triazole (CAS 1279218-29-9)
- 2-(3,4-Dimethoxyphenyl)-3-oxopropanenitrile (CAS 96729-80-5)
- 3-(2,3-Dimethoxyphenyl)-3-oxopropanenitrile (CAS 199102-80-2)
- 3-(2,4-Dimethoxyphenyl)-3-oxopropanenitrile (CAS 76569-43-2)
- 3-(2,6-Dimethoxyphenyl)-3-oxopropanenitrile (CAS 847951-47-7)
- 5-(3,4-Dimethoxyphenyl)isoxazole (CAS 27434-83-9)
- 4-(3,5-Dimethoxyphenyl)butanenitrile (CAS 1057672-62-4)
- 5-(2,6-Dimethoxyphenyl)-3,4-dihydro-2H-pyrrole (CAS 1355197-16-8)
Recommended Standards
- 5-(3-Hydroxy-3-methylbut-1-yn-1-yl)nicotinic acid (CAS 886505-83-5)
- 5-(2-aminophenyl)-5-methylimidazolidine-2,4-dione (CAS 858204-20-3)
- 5-(4-(Methoxymethoxy)phenyl)oxazole (CAS 374641-43-7)
- 5-((O-tolyloxy)methyl)-1,3,4-oxadiazol-2-amine (CAS 21520-91-2)
- 2-(Methylthio)-3-phenylquinazolin-4(3H)-one (CAS 73987-32-3)
- (S)-Methyl 2-((S)-2-(((benzyloxy)carbonyl)amino)-3-(1H-indol-3-yl)propanamido)-3-phenylpropanoate (CAS 63328-40-5)
- n-[(2,5-difluorophenyl)methylidene]hydroxylamine (CAS 915768-14-8)
- Tiotropium Bromide EP Impurity E; (CAS 26447-85-8)
- 3-Phenyl-5-(pyrrolidin-3-yl)-1,2,4-oxadiazole (CAS 1480077-98-2)
- 1-Butyl-3-fluorobenzene (CAS 20651-66-5)
- ((1,2,3,4-Tetrahydronaphthalen-1-yl)methyl)hydrazine (CAS 1341908-40-4)
- 4-(2,5-Dimethyl-1h-pyrrol-1-yl)-2-(trifluoromethyl)aniline (CAS 1049606-08-7)
- Melatonin impurity 13 (CAS 188396-98-7)
- Semaglutide Impurity 145 (CAS CATO-C4X-2226145)
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