4-Chloro-2-methylphenylboronic acid CAS 209919-30-2
| CAS No. | 209919-30-2 |
| Molecular Formula | C7H8BClO2 |
| Molecular Weight | 170.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 170.40 g/mol gives 4-Chloro-2-methylphenylboronic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Chloro-2-methylphenylboronic acid (CAS 209919-30-2) is a high-purity analytical reference standard with the molecular formula C7H8BClO2 and a molecular weight of 170.40 g/mol.
4-Chloro-2-methylphenylboronic acid (C7H8BClO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
CATO manufactures 4-Chloro-2-methylphenylboronic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H8BClO2 |
| Molecular Weight | 170.40 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2016 |
| Halogen Content | Cl-containing |
Related Chloro Standards
- 2-Chloro-4-methylphenylboronic Acid (CAS 145349-62-8)
- 5-Chloro-2-methylbenzeneboronic Acid (CAS 148839-33-2)
- 4-Chloro-3-methylphenylboronic Acid (CAS 161950-10-3)
- 3-Chloro-4-methylphenylboronic Acid (CAS 175883-63-3)
- 2-Chloro-5-methylphenylboronic Acid (CAS 193353-35-4)
- (2-Chloro-3-methylphenyl)boronic acid (CAS 915070-53-0)
- (2-chloro-6-methylphenyl)boronic acid (CAS 851756-51-9)
- 3-Chloro-2-methylphenylboronic Acid (CAS 313545-20-9)
Recommended Standards
- 3-Chloro-5-methylphenylboronic Acid (CAS 913836-14-3)
- 3-Chloro-5-(trifluoromethyl)-1H-pyrazole (CAS 1003320-19-1)
- 5-Chloro-3-(trifluoromethyl)-1H-pyrazole, 97% (CAS 131797-35-8)
- (3-(Chloromethyl)phenyl)boronic acid (CAS 957035-15-3)
- N-(3-acetylphenyl)-2-(4-chloro-2-methylphenoxy)acetamide (CAS 314023-43-3)
- 4-Bromo-5-(difluoromethyl)-2-methylnicotinaldehyde (CAS 1804952-34-8)
- 1-(1-(2-Hydroxy-3-(methylamino)propyl)-2,4-dimethyl-1H-pyrrol-3-yl)ethan-1-one (CAS 825608-34-2)
- 5-Methyl-2-(1-Methylethoxy)-4- (4-piperidinyl)- BenzenaMine hydrochloride (CAS 1380575-45-0)
- [4-(3-hydroxypropyl)-1H-pyrazol-1-yl]acetic acid,HCl (CAS 1431965-20-6)
- 2-Chloro-5-(difluoromethyl)-3-methylisonicotinaldehyde (CAS 1806033-34-0)
- 2-(5-Methyl-1,2,4-oxadiazol-3-yl)piperidine (CAS 1247892-44-9)
- Dihydo-alpha-ionone (CAS 31499-72-6)
- 2-(2-Nitrobenzylidene)-3-oxobutanoic Acid, 2-Acetoxy-2-methylpropyl Ester-d6 (CAS 1185235-10-2)
- Semaglutide impurity 93 (CAS CATO-C4X-222693)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com