Ethyl (E)-4-(((2-chlorobenzoyl)oxy)imino)-3-methyl-4,5,6,7-tetrahydrobenzofuran-2-carboxylate CAS 296244-49-0
| CAS No. | 296244-49-0 |
| Molecular Formula | C19H18ClNO5 |
| Molecular Weight | 375.80 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Ethyl (E)-4-(((2-chlorobenzoyl)oxy)imino)-3-methyl-4,5,6,7-tetrahydrobenzofuran-2-carboxylate 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.
Ethyl (E)-4-(((2-chlorobenzoyl)oxy)imino)-3-methyl-4,5,6,7-tetrahydrobenzofuran-2-carboxylate (CAS 296244-49-0), molecular formula C19H18ClNO5 and molecular weight 375.80 g/mol, is a CATO reference standard with documented purity and traceability.
Ethyl (E)-4-(((2-chlorobenzoyl)oxy)imino)-3-methyl-4,5,6,7-tetrahydrobenzofuran-2-carboxylate (C19H18ClNO5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
Physical & Chemical Properties
| Molecular Formula | C19H18ClNO5 |
| Molecular Weight | 375.80 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Recommended Standards
- 3-(4-Chlorophenoxy)-2-phenylquinoline-4-carboxylic acid (CAS 338400-74-1)
- N-[2-Chloro-5-(trifluoromethyl)phenyl]-2-[(4,6-dimethylpyrimidin-2-yl)sulfanyl]acetamide (CAS 303090-84-8)
- 3-((2-Chloro-6-fluorobenzyl)oxy)-1-(4-fluorobenzyl)-2-methylpyridin-4(1H)-one (CAS 303144-63-0)
- Baclofen Impurity 85 (CAS CATO-C4X-101285)
- 4-(2-Chlorophenyl)-2-fluorobenzoic acid (CAS 505082-99-5)
- 3-Chloro-4-(3-(dimethylamino)propoxy)aniline (CAS 946729-64-2)
- Monoethyl Pyrophosphate (CAS 20680-57-3)
- Ethyl 4-(naphthalen-2-yl)-2,4-dioxobutanoate (CAS 36983-38-7)
- rac 2-Aminothiazoline-4-carboxylic Acid-13C,15N2 (CAS 1346599-59-4)
- (2S)-2-amino-2-benzo[d]furan-2-ylethan-1-ol (CAS 1213611-54-1)
- 5-(5-Methylfuran-2-yl)-1H-pyrrole-2-carboxylic acid (CAS 1547645-87-3)
- 4-Chloro-3-methyl-2,2-diphenylbutyronitrile (CAS 133132-74-8)
- 3-(2-Chloro-4-(2-phenylpropan-2-yl)phenoxy)pyrrolidine hydrochloride (CAS 1220032-93-8)
- Fragment-[3-31]-Liraglutide (CAS CATO-C4X-199232)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com