(4-Chloro-2-(3,5-dimethyl-1H-pyrazol-1-yl)phenyl)boronic acid CAS 1287753-38-1
| CAS No. | 1287753-38-1 |
| Molecular Formula | C11H12BClN2O2 |
| Molecular Weight | 250.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
(4-Chloro-2-(3,5-dimethyl-1H-pyrazol-1-yl)phenyl)boronic acid (CAS 1287753-38-1), molecular formula C11H12BClN2O2 and molecular weight 250.49 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (4-Chloro-2-(3,5-dimethyl-1H-pyrazol-1-yl)phenyl)boronic acid (C11H12BClN2O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.5, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 250.49 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C11H12BClN2O2 |
| Molecular Weight | 250.49 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
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- 2-(Pyrimidin-2-yl)pyrimidine-5-carboxylic acid (CAS 933191-25-4)
- 1-(2-Fluoroethyl)-1h-pyrazole-4-carboxylic acid (CAS 1401727-16-9)
- 4-Isopropyl-1,2,3-thiadiazol-5-amine (CAS 1515572-14-1)
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- Insulin Degludec Impurity 24 (CAS CATO-C4X-215724)
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