2-Chloro-3-ethoxyphenylboronic acid CAS 1256345-57-9
| CAS No. | 1256345-57-9 |
| Molecular Formula | C8H10BClO3 |
| Molecular Weight | 200.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Chloro-3-ethoxyphenylboronic acid (CAS 1256345-57-9), molecular formula C8H10BClO3 and molecular weight 200.43 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-Chloro-3-ethoxyphenylboronic acid (C8H10BClO3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.5, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 200.43 g/mol, it falls into the medium-molecular-weight range. 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.
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 | C8H10BClO3 |
| Molecular Weight | 200.43 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.) | 1990 |
| Halogen Content | Cl-containing |
Related Chloro Standards
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Recommended Standards
- 226570-67-8 3-Butenylzinc bromide, 0.5M in THF MFCD09801449 (CAS 226570-67-8)
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- Cyclobutylzinc(II) Bromide (CAS 1019205-65-2)
- 2-(3-Chloro-5-fluorophenyl)-1,3,2-dioxaborolane (CAS 718641-97-5)
- 2-(6-Oxo-2-thioxo-1,2,3,6-tetrahydropyrimidine-4-carboxamido)acetic acid (CAS 89139-32-2)
- 2-(1,3-Dimethyl-1H-pyrazol-5-yl)ethan-1-amine (CAS 955403-47-1)
- 5-(((4-Chlorophenyl)sulfonyl)methyl)furan-2-carboxylic acid (CAS 1146297-18-8)
- 2-Bromo-1-iodo-3-(trifluoromethoxy)benzene (CAS 1261752-43-5)
- N-hydroxy-2-methylquinoline-4-carboxamide (CAS 1016791-55-1)
- 3,5-Dichloro-2-(1,3-dioxolan-2-yl)pyrazine (CAS 1934593-51-7)
- 2-(4-nitrophenyl)ethan-1-amine (CAS 24954-67-4)
- 4-Bromo-3-methyl-5-phenylthiophene-2-carboxylic acid (CAS 40331-48-4)
- ((R)-1-((S)-2-Amino-N-((S)-1-amino-1-oxo-3-phenylpropan-2-yl)propanamido)ethyl)phosphonic acid (CAS 113719-22-5)
- Semaglutide Impurity 162 (x TFA Salt) (CAS CATO-C4X-2226162)
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