| CAS No. | 1251564-48-3 |
| Molecular Formula | C18H25N5O4S2 |
| Molecular Weight | 439.55 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
3-(3,5-Dimethyl-4-(4-(pyridin-3-ylsulfonyl)piperazin-1-yl)-1H-pyrazol-1-yl)tetrahydrothiophene 1,1-dioxide (CAS 1251564-48-3) is a high-purity analytical reference standard with the molecular formula C18H25N5O4S2 and a molecular weight of 439.55 g/mol.
The molecular framework of 3-(3,5-Dimethyl-4-(4-(pyridin-3-ylsulfonyl)piperazin-1-yl)-1H-pyrazol-1-yl)tetrahydrothiophene 1,1-dioxide (C18H25N5O4S2) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures 3-(3,5-Dimethyl-4-(4-(pyridin-3-ylsulfonyl)piperazin-1-yl)-1H-pyrazol-1-yl)tetrahydrothiophene 1,1-dioxide under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
| Molecular Formula | C18H25N5O4S2 |
| Molecular Weight | 439.55 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |