5-Chloro-1-[(2,6-dichlorophenyl)methyl]-3-methyl-1h-pyrazole-4-carboxylic acid CAS 926257-56-9
| CAS No. | 926257-56-9 |
| Molecular Formula | C12H9Cl3N2O2 |
| Molecular Weight | 319.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Chloro-1-[(2,6-dichlorophenyl)methyl]-3-methyl-1h-pyrazole-4-carboxylic acid (CAS 926257-56-9), molecular formula C12H9Cl3N2O2 and molecular weight 319.57 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 5-Chloro-1-[(2,6-dichlorophenyl)methyl]-3-methyl-1h-pyrazole-4-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 319.57 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 5-Chloro-1-[(2,6-dichlorophenyl)methyl]-3-methyl-1h-pyrazole-4-carboxylic acid 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 | C12H9Cl3N2O2 |
| Molecular Weight | 319.57 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 4-Chloro-2-(3,5-dichlorophenyl)-5-(1-methylhydrazino)-2,3-dihydropyridazin-3-one (CAS 175135-84-9)
- 4-Chloro-2-(2,4-dichlorophenyl)-5-(1-methylhydrazino)-2,3-dihydropyridazin-3-one (CAS 175135-85-0)
- 4-Chloro-2-(3,4-dichlorophenyl)-5-ethoxy-2,3-dihydropyridazin-3-one (CAS 478080-52-3)
- 4-Chloro-5-((2,4-dichlorobenzyl)oxy)-2-methylpyridazin-3(2H)-one (CAS 88093-89-4)
- 4-Chloro-5-((3,4-dichlorobenzyl)oxy)-2-methylpyridazin-3(2H)-one (CAS 88093-90-7)
- 5-Chloro-N-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)quinazolin-2-amine (CAS 1644664-02-7)
- 1-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-4,4,4-trifluorobutane-1,3-dione (CAS 207994-03-4)
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Recommended Standards
- Resmetirom impurity 63 (CAS CATO-C4X-291263)
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- 4,5-Dichloro-2-[2-(4-chlorophenoxy)ethyl]-2,3-dihydropyridazin-3-one (CAS 875164-09-3)
- Sodium TauroglycocholateSee S670705 (CAS 11006-55-6)
- Ethyl 2-(6-oxo-3-(p-tolyl)pyridazin-1(6H)-yl)acetate (CAS 58112-52-0)
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