7-Methoxy-3-methyl-1-benzofuran-2-carboxylic acid CAS 18703-80-5
| CAS No. | 18703-80-5 |
| Molecular Formula | C11H10O4 |
| Molecular Weight | 206.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
7-Methoxy-3-methyl-1-benzofuran-2-carboxylic acid (C11H10O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, 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 high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
CATO supplies 7-Methoxy-3-methyl-1-benzofuran-2-carboxylic acid (CAS 18703-80-5), a certified reference material (molecular formula C11H10O4, MW 206.19 g/mol) for analytical method development and quality control.
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.
As a certified reference material (CRM), 7-Methoxy-3-methyl-1-benzofuran-2-carboxylic 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 | C11H10O4 |
| Molecular Weight | 206.19 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.) | 1962 |
Related Methoxy Standards
- 6-Methoxy-2-methylbenzofuran-3-carboxylic acid (CAS 103986-33-0)
- 6-Methoxy-4-methyl-1-benzofuran-2-carboxylic acid (CAS 1427427-80-2)
- 7-Methoxy-5-methylbenzofuran-3-carboxylic acid (CAS 1485985-19-0)
- 3-Methoxy-7-methylbenzofuran-2-carboxylic acid (CAS 1554430-92-0)
- 3-Methoxy-5-methylbenzofuran-2-carboxylic acid (CAS 1557010-09-9)
- 4-(3-Methoxy-3-oxoprop-1-en-1-yl)benzoic acid (CAS 160648-26-0)
- 6-Methoxy-3-oxo-2,3-dihydro-1H-indene-1-carboxylic acid (CAS 17825-44-4)
- 2-(7-Methoxy-1-benzofuran-3-yl)acetic acid (CAS 79477-01-3)
Recommended Standards
- (4AR,7R,8R,8aS)-2-methylhexahydropyrano[3,2-d][1,3]dioxine-6,7,8-triol (CAS 18465-50-4)
- 4',5-Difluoro-[1,1'-biphenyl]-3-ol (CAS 187392-70-7)
- 3-Hydroxy-4-methoxybenzene-1-sulfonyl fluoride (CAS 1824415-91-9)
- 2,2-difluoro-5H-[1,3]dioxolo[4,5-f]benzimidazole (CAS 188028-35-5)
- 2-Methyl-2-(4-methyl-2-nitrophenoxy)propanoic acid (CAS 71659-83-1)
- N-(1-(1-(2-Methylallyl)-1H-benzo[d]imidazol-2-yl)ethyl)furan-2-carboxamide (CAS 919972-35-3)
- 4-Chloro-5-(1,3-dioxolan-2-yl)-1-(phenylsulfonyl)pyrrolo[2,3-b]pyridine (CAS 1032815-08-9)
- 1-Methylpiperidine-2,5-dione (CAS 408309-25-1)
- 2-(4-Ethoxyphenyl)-2-(piperidin-1-yl)acetic acid (CAS 1017206-23-3)
- 1-Bromo-3,6-difluoro-2-(difluoromethoxy)benzene (CAS 1519049-10-5)
- 1-Iodoisoquinolin-5-amine (CAS 1260759-47-4)
- (4-(Pyridin-3-yl)thiophen-2-yl)methanamine (CAS 1342530-27-1)
- (R)-1-(3-chloro-5-fluorophenyl)-2-methylpropan-1-amine (CAS 1213531-95-3)
- Peptide 439 (CAS CATO-CPTD788439)
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