Methyl 5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-1H-pyrazole-3-carboxylate CAS 158941-06-1
| CAS No. | 158941-06-1 |
| Molecular Formula | C17H11Cl3N2O2 |
| Molecular Weight | 381.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Methyl 5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-1H-pyrazole-3-carboxylate 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.
Methyl 5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-1H-pyrazole-3-carboxylate (CAS 158941-06-1) is a high-purity analytical reference standard with the molecular formula C17H11Cl3N2O2 and a molecular weight of 381.64 g/mol.
Structurally, Methyl 5-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-1H-pyrazole-3-carboxylate (C17H11Cl3N2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 381.64 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C17H11Cl3N2O2 |
| Molecular Weight | 381.64 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Methyl Standards
- (6-(4-((4-Chlorophenyl)sulfonyl)piperazin-1-yl)pyridin-3-yl)boronic acid (CAS 1003043-43-3)
- Methyl 5-(4-chlorophenyl)-1-(3,4-dichlorophenyl)-1H-pyrazole-3-carboxylate (CAS 158941-38-9)
- 5-(4-Chlorophenyl)-1-(2,4-dichlorophenyl)-4-methylpyrazole-3-carboxylic Acid (CAS 162758-35-2)
- 5-(4-Chlorophenyl)-1-(2,4-dichlorobenzyl)-1H-pyrazole-3-carboxylic acid (CAS 192701-96-5)
- 1-(4-Chlorophenyl)-N-(2,4-dichlorophenyl)-5-methyl-1H-1,2,4-triazole-3-carboxamide (CAS 321431-02-1)
- 1-(4-Chlorophenyl)-N-(3,5-dichlorophenyl)-5-methyl-1H-1,2,4-triazole-3-carboxamide (CAS 321431-31-6)
- Methyl 1-(3-chlorophenyl)-5-(3,4-dichlorophenyl)-1H-pyrazole-3-carboxylate (CAS 318256-19-8)
- Methyl 5-(2-chlorophenyl)-1-(3,4-dichlorophenyl)-1H-pyrazole-3-carboxylate (CAS 318256-25-6)
Recommended Standards
- N-Dodecanoyldodecanamide (CAS 112605-93-3)
- (S)-2-[Bis(3,5-dimethylphenyl)[(trimethylsilyl)oxy]methyl]pyrrolidine (CAS 848821-60-3)
- N-(2-Hydroxyethyl)erucamide (CAS 18190-74-4)
- (3-(4-Bromophenyl)-1-(3-chloro-4-fluorophenyl)-1H-pyrazol-4-yl)methanol (CAS 618383-29-2)
- (E)-N-Methyl-3-(pyridin-3-yl)prop-2-en-1-amine (CAS 228271-74-7)
- 1-(Pyridin-2-yl)azetidin-3-amine trihydrochloride (CAS 1365968-67-7)
- 7-(1,1-Dimethylethyl)-2,3,5,6,7,8-hexahydro-3-propyl-2-thioxo[1]benzothieno[2,3-d]pyrimidin-4(1H)-one (CAS 744241-98-3)
- 3-(2,6-difluorophenyl)-1H-pyrazole-4-carboxylic acid (CAS 1152540-02-7)
- (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(pyrazin-2-yl)propanoic acid (CAS 850013-92-2)
- (3aR,4S,9bS)-4-(4-fluorophenyl)-3a,4,5,9b-tetrahydro-3H-cyclopenta[c]quinoline-8-cArboxylic acid (CAS 1391570-73-2)
- 5-Chloro-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine (CAS 1146970-26-4)
- 2-({[(9h-fluoren-9-yl)methoxy]carbonyl}amino)-5-fluorobenzoic acid (CAS 1185296-60-9)
- C-(4-Chloro-phenyl)-C-pyridin-3-yl-methylamine dihydrochloride (CAS 883548-10-5)
- HA Peptide (CAS 92000-76-5)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com