2-(2-Ethyl-1,3-benzoxazol-5-yl)acetic acid CAS 866038-38-2
| CAS No. | 866038-38-2 |
| Molecular Formula | C11H11NO3 |
| Molecular Weight | 205.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(2-Ethyl-1,3-benzoxazol-5-yl)acetic acid (CAS 866038-38-2) is a high-purity analytical reference standard with the molecular formula C11H11NO3 and a molecular weight of 205.21 g/mol.
Based on its molecular formula C11H11NO3, 2-(2-Ethyl-1,3-benzoxazol-5-yl)acetic 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 205.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), 2-(2-Ethyl-1,3-benzoxazol-5-yl)acetic 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 | 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.) | 1987 |
| Nitrogen Atoms | 1 |
Related Ethyl Standards
- 4-(1,3-Benzoxazol-2-yl)butanoic acid (CAS 288569-91-5)
- 2-(1,3-Benzoxazol-2-yl)cyclopropanecarboxylic acid (CAS 1142214-36-5)
- (1,3-Benzoxazol-2-ylthio)acetic acid (CAS 58089-32-0)
- 2-(1,3-Benzoxazol-2-yl)aniline (CAS 29483-74-7)
- 3-(1,3-benzoxazol-2-yl)propanoic acid (CAS 78757-00-3)
- N-1,3-Benzoxazol-2-ylsulfuric diamide (CAS 136810-65-6)
- 1-(1,3-Benzoxazol-2-yl)-3-methyl-1H-pyrazol-5-amine (CAS 926190-29-6)
- 2-(1,3-benzoxazol-2-ylsulfanyl)ethan-1-ol (CAS 126828-31-7)
Recommended Standards
- 2-(2-Aminoethyl)-2,3-dihydrophthalazine-1,4-dione (CAS 87365-18-2)
- 2-(2-Hydroxyphenyl)-4,4-dimethyloxazol-5(4H)-one (CAS 77919-03-0)
- 2-(2-Aminoethyl)-1H-1,3-benzodiazole-5-carboxylic acid (CAS 902153-10-0)
- 2-(2-Hydroxypropyl)isoindoline-1,3-dione (CAS 3700-55-8)
- Methyl 3-oxo-2,3-dihydropyridazine-4-carboxylate (CAS 89640-80-2)
- 4-(4-Nitrophenyl)oxazole (CAS 13382-61-1)
- 3-(1-Oxo-4-phenylphthalazin-2(1H)-yl)propanoic acid (CAS 76972-40-2)
- 6-(2-Hydroxypropan-2-yl)picolinic acid (CAS 1799890-65-5)
- 3-Chloro-N-(2,2-dimethylthietan-3-yl)pyridin-2-amine (CAS 1879534-47-0)
- 4-(2-Cyclopropyl-2-oxoethoxy)-N-(2-((4-methyl-4H-1,2,4-triazol-3-yl)thio)ethyl)benzamide (CAS 1251546-58-3)
- H-Asn(Mtt)-OH (CAS 144317-20-4)
- 2-(3-Bromopropyl)-1,3-dichlorobenzene (CAS 14573-25-2)
- 51AA3SI0JM 952-23-8 Proflavine monohydrochloride Acridine, 3,6-diamino-, monohydrochloride Proflavine hydrochloride 3,6-Acridinediamine, monohydrochloride CCRIS 532 3,6-Diaminoacridine hydrochloride hemihydrate 3,6-Diaminoacridine monohydrochloride 2,8-Diaminoacridinium chloride monohydrochloride EINECS 213-459-9 NCI-C04137 Proflavin hydrochloride Proflavine HCl UNII-51AA3SI0JM (CAS 952-23-8)
- Semaglutide impurity 197 (CAS CATO-C4X-2226197)
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