5-chloro-4-isopropoxy-3-methyl-benzofuran-2-carboxylic acid CAS 857080-98-9
| CAS No. | 857080-98-9 |
| Molecular Formula | C13H21ClO4 |
| Molecular Weight | 276.76 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-chloro-4-isopropoxy-3-methyl-benzofuran-2-carboxylic acid (CAS 857080-98-9), molecular formula C13H21ClO4 and molecular weight 276.76 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-chloro-4-isopropoxy-3-methyl-benzofuran-2-carboxylic acid (C13H21ClO4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 276.76 g/mol, it falls into the medium-molecular-weight range. 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.
Physical & Chemical Properties
| Molecular Formula | C13H21ClO4 |
| Molecular Weight | 276.76 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
Related chloro Standards
- 2-chloro-5-methyl-n-(3-nitrophenyl)pyrimidin-4-amine (CAS 1202759-74-7)
- N-(3-Chloro-2-methylphenyl)-4-(1H-pyrrol-1-yl)butanamide (CAS 1251558-02-7)
- 2-Chloro-N-isopropyl-N-(isoquinolin-1-ylmethyl)acetamide (CAS 1353986-47-6)
- 4-Chloro-7-methyltetraphene (CAS 14009-28-0)
- 4-Chloro-6-(2,4-dimethylphenyl)-2-(1-methoxyethyl)pyrimidine (CAS 1707378-52-6)
- Methyl 4-chloro-5-(methylthio)-3-(prop-2-yn-1-yloxy)thiophene-2-carboxylate (CAS 1708079-51-9)
- 4-Chloro-2-cyclohexyl-6-(1-methyl-1H-pyrazol-4-yl)pyrimidine (CAS 1708380-09-9)
- 3-Chloro-1-(tetrahydrofuran-2-yl)-6,7,8,9-tetrahydro-5H-cyclohepta[c]pyridine-4-carbonitrile (CAS 1779122-61-0)
Recommended Standards
- 5-Butyl-2-(4-chlorophenyl)-6-methylpyrimidin-4(1H)-one (CAS 61442-48-6)
- 7-(Chloromethyl)tetraphene (CAS 6325-54-8)
- 5-(4-Chlorophenyl)-3-(piperidin-1-ylmethyl)isoxazole (CAS 343374-67-4)
- 9-Chloro-9-phenyl-9H-fluorene (CAS 25022-99-5)
- 3-Bromo-2,6-bis(trifluoromethyl)pyridine (CAS 1806378-86-8)
- 5,5-Dimethyl-2,5-dihydro-3,3'-biisoxazole (CAS 502181-53-5)
- Ethyl 5-oxo-5-(4-pyridyl)valerate (CAS 25370-47-2)
- (S)-2-Trifluoromethylpiperidinesulfonyl chloride (CAS 1389310-19-3)
- 8-Bromo-2,3-dimethylquinazolin-4(3H)-one (CAS 1263413-81-5)
- 6-bromo-7-fluoro-benzothiophene (CAS 1427437-51-1)
- n-((1,2,3-Thiadiazol-4-yl)methyl)-3,5-dichloroaniline (CAS 1156893-88-7)
- 5-Fluoro-1,2-oxathiolane 2,2-dioxide (CAS 946078-69-9)
- tert-Butyl 4-bromo-1H-pyrrolo[2,3-c]pyridine-1-carboxylate (CAS 850892-97-6)
- Semaglutide impurity 205 (CAS CATO-C4X-2226205)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com