(4-((Hydroxyimino)methyl)phenyl)boronic acid CAS 179942-51-9
| CAS No. | 179942-51-9 |
| Molecular Formula | C7H8BNO3 |
| Molecular Weight | 164.95 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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 supplies (4-((Hydroxyimino)methyl)phenyl)boronic acid (CAS 179942-51-9), a certified reference material (molecular formula C7H8BNO3, MW 164.95 g/mol) for analytical method development and quality control.
(4-((Hydroxyimino)methyl)phenyl)boronic acid (C7H8BNO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C7H8BNO3 |
| Molecular Weight | 164.95 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2008 |
| Nitrogen Atoms | 1 |
Related Hydroxyimino Standards
- (E)-(2-((hydroxyimino)methyl)phenyl)boronic acid (CAS 859160-67-1)
- 3-(Hydroxyimino)methylphenylboronic acid (CAS 938443-32-4)
- (E)-4-((Hydroxyimino)methyl)benzoic acid (CAS 99481-81-9)
- 4-[(hydroxyimino)methyl]benzoic acid (CAS 3477-93-8)
- 4-[(hydroxyimino)methyl]-N,N-dimethylaniline (CAS 37961-71-0)
- 2-(Hydroxyimino)-N-phenylacetamide (CAS 1769-41-1)
- 1-(Hydroxyimino)-1-(pyridin-2-yl)propan-2-one (CAS 65882-98-6)
- 5-[1-(hydroxyimino)ethyl]-4-methylpyrimidin-2-amine (CAS 1050886-14-0)
Recommended Standards
- (5-Acetylpyridin-3-yl)boronic acid (CAS 1033745-21-9)
- (2,5-difluoropyridin-3-yl)boronic acid (CAS 872041-95-7)
- (2-Formamidophenyl)boronic acid (CAS 1003042-86-1)
- (6-Acetylpyridin-2-yl)boronic acid (CAS 913373-40-7)
- Diethyl 1-benzyl-1H-imidazole-4,5-dicarboxylate (CAS 1232-51-5)
- 2-[(2-chloroethane)sulfonyl]propane (CAS 1177100-75-2)
- 4-Bromo-2-(trifluoromethoxy)-1-(trifluoromethyl)benzene (CAS 1396503-79-9)
- Methyl 2-(4-(trifluoromethyl)phenoxy)acetate (CAS 787575-59-1)
- Y 11 (CAS 1086639-59-9)
- 5-Iodo-2-(trifluoromethyl)pyrimidin-4-amine (CAS 1823903-96-3)
- 3-(5-((Dimethylamino)methyl)thiophen-3-yl)prop-2-yn-1-ol (CAS 1248081-95-9)
- 3,5-Dichloro-4-propoxybenzaldehyde (CAS 883532-96-5)
- 1-Cyclopropyl-4-iodobenzene (CAS 57807-27-9)
- Semaglutide impurity 259 (CAS CATO-C4X-2226259)
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