(5-Chloro-1,3-benzoxazol-2-yl)acetic acid ethyl ester 138420-09-4 5-Chloro-2-(2-ethoxy-2-oxoethyl)-1,3-benzoxazole ethyl 2-(5-chloro-1,3-benzoxazol-2-yl)acetate CAS 138420-09-4
| CAS No. | 138420-09-4 |
| Molecular Formula | C11H10ClNO3 |
| Molecular Weight | 239.66 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (5-Chloro-1,3-benzoxazol-2-yl)acetic acid ethyl ester 138420-09-4 5-Chloro-2-(2-ethoxy-2-oxoethyl)-1,3-benzoxazole ethyl 2-(5-chloro-1,3-benzoxazol-2-yl)acetate is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies (5-Chloro-1,3-benzoxazol-2-yl)acetic acid ethyl ester 138420-09-4 5-Chloro-2-(2-ethoxy-2-oxoethyl)-1,3-benzoxazole ethyl 2-(5-chloro-1,3-benzoxazol-2-yl)acetate (CAS 138420-09-4), a certified reference material (molecular formula C11H10ClNO3, MW 239.66 g/mol) for analytical method development and quality control.
Based on its molecular formula C11H10ClNO3, (5-Chloro-1,3-benzoxazol-2-yl)acetic acid ethyl ester 138420-09-4 5-Chloro-2-(2-ethoxy-2-oxoethyl)-1,3-benzoxazole ethyl 2-(5-chloro-1,3-benzoxazol-2-yl)acetate contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 239.66 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.
CATO manufactures (5-Chloro-1,3-benzoxazol-2-yl)acetic acid ethyl ester 138420-09-4 5-Chloro-2-(2-ethoxy-2-oxoethyl)-1,3-benzoxazole ethyl 2-(5-chloro-1,3-benzoxazol-2-yl)acetate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H10ClNO3 |
| Molecular Weight | 239.66 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
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