Ethyl 4-chloro-5-formyl-3-methylbenzofuran-2-carboxylate CAS 137987-77-0
| CAS No. | 137987-77-0 |
| Molecular Formula | C13H11ClO4 |
| Molecular Weight | 266.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Ethyl 4-chloro-5-formyl-3-methylbenzofuran-2-carboxylate is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Ethyl 4-chloro-5-formyl-3-methylbenzofuran-2-carboxylate (CAS 137987-77-0), a certified reference material (molecular formula C13H11ClO4, MW 266.68 g/mol) for analytical method development and quality control.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, Ethyl 4-chloro-5-formyl-3-methylbenzofuran-2-carboxylate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 266.68 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), Ethyl 4-chloro-5-formyl-3-methylbenzofuran-2-carboxylate 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 | C13H11ClO4 |
| Molecular Weight | 266.68 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, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl-containing |
Related Ethyl Standards
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- 4-chloro-1-[(4-methylphenoxy)methyl]-1H-pyrazole-3-carboxylic acid (CAS 1006444-40-1)
- Methyl 5-chloro-6-cyclopropyl-3-methylisoxazolo[5,4-b]pyridine-4-carboxylate (CAS 1011398-90-5)
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Recommended Standards
- Ethyl 4-chloro-8-methoxyquinazoline-2-carboxylate (CAS 1360652-12-5)
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- 6-Amino-7-chloro-1-ethyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 1333247-30-5)
- 4-Chloro-1,3-dimethoxy-2-naphthoic acid (CAS 1399663-14-9)
- 1-(4-Aminophenyl)-4-methylpiperidin-4-ol (CAS 1002726-91-1)
- 7-(7-Aminoheptanamido)heptanoic acid (CAS 1308300-37-9)
- Turmeronol A (CAS 131651-37-1)
- 2-Thiophen-2-yl-benzoyl chloride (CAS 97677-81-1)
- 3-(4-Ethoxyphenyl)pentan-3-ol (CAS 1341680-04-3)
- 2-(1-(2-Nitrophenyl)-1H-pyrazol-5-yl)thiazole (CAS 1269294-02-1)
- 1-Chloro-3-(3-chlorobut-3-en-1-yl)benzene (CAS 731772-05-7)
- Alogliptin Impurity 95 (CAS CATO-C4X-109995)
- Levosimendan Impurity 58 (CAS CATO-C4X-130858)
- Semaglutide impurity 45 (CAS CATO-C4X-222645)
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