2-(Carboxy(hydroxy)methyl)-5-ethylbenzo[d]oxazole CAS 1803746-52-2
| CAS No. | 1803746-52-2 |
| Molecular Formula | C11H11NO4 |
| Molecular Weight | 221.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-(Carboxy(hydroxy)methyl)-5-ethylbenzo[d]oxazole (CAS 1803746-52-2) is a high-purity analytical reference standard with the molecular formula C11H11NO4 and a molecular weight of 221.21 g/mol.
The molecular framework of 2-(Carboxy(hydroxy)methyl)-5-ethylbenzo[d]oxazole (C11H11NO4) 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 the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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.) | 1995 |
| Nitrogen Atoms | 1 |
Related Carboxy Standards
- 3-(Methyl carboxy)-4-(pyridin-3-yl)but-3-enoic acid (CAS 1415565-98-8)
- 2-(Carboxy(hydroxy)methyl)-7-ethylbenzo[d]oxazole (CAS 1804037-73-7)
- 5-Carboxy-N-phenyl-2-1H-pyridone-d5 (CAS 1020719-24-7)
- 6-Carboxy-4-(hydroxyamino)quinoline 1-oxide (CAS 13442-14-3)
- 2-Carboxy-7-methylimidazo[1,2-a]pyridine-6-boronic acid (CAS 2377609-21-5)
- 2-(Carboxy(hydroxy)methyl)-5-methoxybenzo[d]oxazole (CAS 1539761-87-9)
- 2-(Carboxy(hydroxy)methyl)-4-methoxybenzo[d]oxazole (CAS 1803746-59-9)
- 2-(Carboxy(hydroxy)methyl)benzo[d]oxazole-6-methanol (CAS 1804080-29-2)
Recommended Standards
- 1-(3-Nitrophenyl)cyclobutanecarboxylic Acid (CAS 180080-87-9)
- Methyl 2-methyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylate (CAS 179950-77-7)
- 2-(5-Cyano-2,3-dimethoxyphenyl)acetic acid (CAS 1807291-07-1)
- Methyl 2-methyl-3-oxo-3,4-dihydro-2H-1,4-benzoxazine-7-carboxylate (CAS 179950-69-7)
- Lithium (5-cyanopyridin-2-yl)triisopropoxyborate (CAS 1048030-52-9)
- n-Cyclobutyl-2-methoxypyridin-3-amine (CAS 1250035-07-4)
- 1-(4-(Benzylamino)phenyl)ethanone (CAS 59852-82-3)
- 2-[2-(2-Chlorophenyl)-4-phenyl-1,3-thiazol-5-yl]-N-(4-fluorophenyl)acetamide (CAS 338957-29-2)
- 2,2-dichloroethan-1-amine hydrochloride (CAS 5960-89-4)
- 2,2-Dimethyl-5-(4-methylphenyl)-3,4-dihydro-2H-pyrrol-1-ium-1-olate (CAS 162553-35-7)
- 3-(5-Fluoro-2-methoxyphenyl)pentan-3-ol (CAS 1443346-86-8)
- (S)-2-Amino-N-ethyl-N-(4-methylbenzyl)propanamide (CAS 1353994-39-4)
- N,N-Dimethyl-1-(p-tolyl)methanamine (CAS 4052-88-4)
- Semaglutide impurity 73 (CAS CATO-C4X-222673)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com