5-Chloro-2-ethoxyphenylboronic acid pinacol ester CAS 1689512-53-5
| CAS No. | 1689512-53-5 |
| Molecular Formula | C14H20BClO3 |
| Molecular Weight | 282.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Chloro-2-ethoxyphenylboronic acid pinacol ester 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.
5-Chloro-2-ethoxyphenylboronic acid pinacol ester (CAS 1689512-53-5), molecular formula C14H20BClO3 and molecular weight 282.57 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C14H20BClO3, 5-Chloro-2-ethoxyphenylboronic acid pinacol ester contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 282.57 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C14H20BClO3 |
| Molecular Weight | 282.57 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 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) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | Cl-containing |
Related Chloro Standards
- 2-Chloro-5-methoxymethylphenylboronic acid pinacol ester (CAS 1079402-22-4)
- 2-Chloro-N,N-dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-amine (CAS 1201845-13-7)
- 2-(4-Chloro-2-methoxy-6-methylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1207961-49-6)
- 2-(3-Chloro-5-ethoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1218789-40-2)
- 2-(4-Chloro-3-ethoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1310956-28-5)
- (3-Chloro-4-((4-ethylpiperazin-1-yl)methyl)phenyl)boronic acid (CAS 1704074-25-8)
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- 2-Chloro-3,6-dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol (CAS 1799612-36-4)
Recommended Standards
- 2-(2-(2-Chloroethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1256359-02-0)
- 2-(4-(2-Chloroethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1256359-01-9)
- 2-(3-(2-Chloroethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1256359-00-8)
- 2-(3-Chloro-4-methoxy-5-methylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1801166-63-1)
- 1-Bromo-4-(cyclopentyldifluoromethyl)benzene (CAS 2648450-83-1)
- (R)-1-picolinoylpiperidine-2-carboxylic acid (CAS 1786841-18-6)
- Methyl 2-(2-chloroacetamido)thiophene-3-carboxylate (CAS 590355-43-4)
- 2,2-Dimethyl-3-(1,2,3,4-tetrahydronaphthalen-1-yl)propanoic acid (CAS 152466-77-8)
- Ethyl 2-amino-4-fluoro-5-hydroxybenzoate (CAS 1248820-25-8)
- 5-Bromo-4,7-dimethoxy-1H-indole-3-carbaldehyde (CAS 2410249-79-3)
- 2-(4-Phenylpiperazin-1-yl)pyridin-3-amine (CAS 14549-64-5)
- 1-Methyl-1H-indole-2-carbonitrile (CAS 60680-97-9)
- (Z)-Rilpivirine Hydrochloride (CAS 1502822-82-3)
- Liraglutide(14-22)TFA Salt (CAS CATO-C4X-199212)
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