3-Chloro-5-ethoxy-4-methoxyphenylboronic acid CAS 2096338-67-7
| CAS No. | 2096338-67-7 |
| Molecular Formula | C9H12BClO4 |
| Molecular Weight | 230.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-Chloro-5-ethoxy-4-methoxyphenylboronic acid is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 3-Chloro-5-ethoxy-4-methoxyphenylboronic acid (CAS 2096338-67-7), a certified reference material (molecular formula C9H12BClO4, MW 230.45 g/mol) for analytical method development and quality control.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, 3-Chloro-5-ethoxy-4-methoxyphenylboronic acid is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 230.45 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.
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.
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 | C9H12BClO4 |
| Molecular Weight | 230.45 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 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) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Cl-containing |
Related Chloro Standards
- (4-Chloro-2-(2-methoxyethoxy)phenyl)boronic acid (CAS 1256354-97-8)
- (4-Chloro-3-(2-methoxyethoxy)phenyl)boronic acid (CAS 1256355-00-6)
- 3-Chloro-4-ethoxy-5-methoxyphenylboronic acid (CAS 1701449-09-3)
- [3-Chloro-5-(2-methoxyethoxy)phenyl]boronic acid (CAS 2096335-62-3)
- 2-Chloro-4-(2-methoxyethoxy)phenylboronic acid (CAS 2377606-06-7)
- 2-Chloro-5-(2-methoxyethoxy)phenylboronic acid (CAS 2096339-83-0)
- (3-Chloro-4-methylphenyl)(hydroxy)(phenyl)borane (CAS 872495-52-8)
- 2-Chloro-3,3,4,4,5,5,5-heptafluoro-pent-1-ene (CAS 261503-64-4)
Recommended Standards
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- PPVE (CAS 1623-05-8)
- (2E)-1-(3-Nitrophenyl)-3-[4-(propan-2-yl)phenyl]prop-2-en-1-one (CAS 200123-07-5)
- N-(2,2-Dimethyl-1,3-Dioxan-5-Yl)-6-Methoxy-3-Nitropyridin-2-Amine (CAS 1075237-91-0)
- Methyl 7-fluoroindoline-6-carboxylate (CAS 1890520-20-3)
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