3-Methyl-1-tosyl-1H-pyrazole CAS 6126-11-0
| CAS No. | 6126-11-0 |
| Molecular Formula | C11H12N2O2S |
| Molecular Weight | 236.29 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.
3-Methyl-1-tosyl-1H-pyrazole (CAS 6126-11-0) is a high-purity analytical reference standard with the molecular formula C11H12N2O2S and a molecular weight of 236.29 g/mol.
The molecular framework of 3-Methyl-1-tosyl-1H-pyrazole (C11H12N2O2S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
As a certified reference material (CRM), 3-Methyl-1-tosyl-1H-pyrazole 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 | C11H12N2O2S |
| Molecular Weight | 236.29 g/mol |
| 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 |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 2-Methyl-1-tosyl-1H-imidazole (CAS 86181-71-7)
- 4-Tosyl-1h-pyrazol-5-amine (CAS 67960-22-9)
- 1-Tosyl-1,2,3,6-tetrahydropyridine (CAS 57186-75-1)
- 6-Tosyl-6-azabicyclo[3.1.0]hexane (CAS 81097-48-5)
- 4-Tosyl-1,3-dihydro-2H-imidazol-2-one (CAS 185010-98-4)
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Recommended Standards
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- 4-((4-Methoxyphenoxy)methyl)thiazol-2-amine (CAS 885457-94-3)
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- N-(thiazol-2-yl)-1H-benzo[d][1,2,3]triazole-1-carbothioamide (CAS 690634-07-2)
- 3-Bromo-5-ethyltoluene (CAS 1208075-19-7)
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