Ethyl 3-bromo-4,5,6,7-tetrahydroisobenzofuran-1-carboxylate CAS 188240-68-8
| CAS No. | 188240-68-8 |
| Molecular Formula | C11H13BrO3 |
| Molecular Weight | 273.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Ethyl 3-bromo-4,5,6,7-tetrahydroisobenzofuran-1-carboxylate (C11H13BrO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Ethyl 3-bromo-4,5,6,7-tetrahydroisobenzofuran-1-carboxylate (CAS 188240-68-8), a certified reference material (molecular formula C11H13BrO3, MW 273.12 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C11H13BrO3 |
| Molecular Weight | 273.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2010 |
| Halogen Content | Br-containing |
Related Ethyl Standards
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Recommended Standards
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- Methyl 2-(4-bromo-5-(hydroxymethyl)-2-methylphenyl)acetate (CAS 1956370-75-4)
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- 2-Amino-3-(1-((benzyloxy)carbonyl)piperidin-4-yl)propanoic acid (CAS 1255666-11-5)
- (S)-N-(1-(4-(chloromethyl)phenyl)ethyl)acetamide (CAS 223514-63-4)
- 1-Isopropyl-5-methyldihydropyrimidine-2,4(1H,3H)-dione (CAS 6306-74-7)
- Cilastatin EP Impurity E (CAS 1174657-07-8)
- n1,n1-Diethyl-n2-(tetrahydro-2h-pyran-4-yl)ethane-1,2-diamine (CAS 1157008-42-8)
- 5-(4-(Benzyloxy)phenyl)-4-phenyl-4H-1,2,4-triazole-3-thiol (CAS 189372-24-5)
- 3-methyl-1-phenyl-6-pyridin-3-yl-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid (CAS 1011397-14-0)
- 4-Methyl-6-phenyl-1,4-dihydropyridazin-3(2H)-one (CAS 52239-91-5)
- Semaglutide impurity 248 (CAS CATO-C4X-2226248)
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