1H-pyrazol-4-ylboronic acid;hydrochloride CAS 1256346-38-9
| CAS No. | 1256346-38-9 |
| Molecular Formula | C3H5BN2O2 |
| Molecular Weight | N/A |
| 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.
1H-pyrazol-4-ylboronic acid;hydrochloride (CAS 1256346-38-9), molecular formula C3H5BN2O2HCl and molecular weight 148.35 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, 1H-pyrazol-4-ylboronic acid;hydrochloride is typically white to off-white liquid. Its solid-state physicochemical attributes — including a molecular weight of 148.35 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 1H-pyrazol-4-ylboronic acid;hydrochloride meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C3H5BN2O2 HCl |
| Molecular Weight | 148.35 g/mol |
| 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 | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.5 |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related H Standards
- 3-(1H-Pyrazol-4-yl)benzoic acid (CAS 1002535-21-8)
- 1-(3-(1H-Pyrazol-1-yl)phenyl)-N,N-dimethylmethanamine (CAS 1003993-34-7)
- 3-(4-(1H-Pyrazol-1-yl)phenyl)-6-(methylthio)pyridazine (CAS 1004184-50-2)
- 1-((1h-Pyrazol-1-yl)methyl)-1h-pyrazole-3-carbohydrazide (CAS 1004192-91-9)
- 2-((6-(4-(1H-Pyrazol-1-yl)phenyl)pyridazin-3-yl)thio)-N-(5-methylisoxazol-3-yl)acetamide (CAS 1004439-73-9)
- 3-(1-(1H-Pyrazol-4-yl)propyl)-2-thioxoimidazolidin-4-one (CAS 1004643-56-4)
- 1-(5-methyl-pyraZol-1-yl)-propan-2-one (CAS 1004643-66-6)
- 1-((1H-pyrazol-1-yl)methyl)-1H-pyrazole-3-carboxylic acid (CAS 1005631-12-8)
Recommended Standards
- 4-Ethoxy-N-(1-hydroxybutan-2-yl)-3-isopropylbenzenesulfonamide (CAS 1246822-39-8)
- 4,6-Dimethyl-1H,3H-selenopheno[3,4-c]thiophene (CAS 91377-87-6)
- n-(5-Bromo-2-fluorophenyl)methanesulfonamide (CAS 710348-24-6)
- 1,2,4-Thiadiazol-3-amine hydrochloride (CAS 103295-01-8)
- (3,3-dimethoxycyclobutyl)methanol (CAS 175021-11-1)
- 3,5-Dimethyl-1-((2,2,2-trifluoroethoxy)methyl)-1h-pyrazol-4-amine (CAS 1006473-39-7)
- 3,4-Dibromo-2-fluorobenzylamine (CAS 1806354-33-5)
- 7-benzyl-1,3,7-triazaspiro[4.5]decane-2,4-dione (CAS 28937-10-2)
- 1-Cyclobutyl-5-oxopyrrolidine-3-carboxylic acid (CAS 1223748-42-2)
- Tirzepatide Impurity 36 (CAS CATO-C4X-324036)
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