5-[1-(2-Chlorobenzenesulfonyl)pyrrolidin-2-yl]-3-[3-(trifluoromethyl)phenyl]-1,2,4-oxadiazole CAS 551930-98-4
| CAS No. | 551930-98-4 |
| Molecular Formula | C19H15ClF3N3O3S |
| Molecular Weight | 457.85 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-[1-(2-Chlorobenzenesulfonyl)pyrrolidin-2-yl]-3-[3-(trifluoromethyl)phenyl]-1,2,4-oxadiazole (CAS 551930-98-4), molecular formula C19H15ClF3N3O3S and molecular weight 457.85 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5-[1-(2-Chlorobenzenesulfonyl)pyrrolidin-2-yl]-3-[3-(trifluoromethyl)phenyl]-1,2,4-oxadiazole (C19H15ClF3N3O3S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine/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 457.85 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), 5-[1-(2-Chlorobenzenesulfonyl)pyrrolidin-2-yl]-3-[3-(trifluoromethyl)phenyl]-1,2,4-oxadiazole 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 | C19H15ClF3N3O3S |
| Molecular Weight | 457.85 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; 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.) | 1984 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Chlorobenzenesulfonyl Standards
- 5-[1-(4-Chlorobenzenesulfonyl)pyrrolidin-2-yl]-3-[3-(trifluoromethyl)phenyl]-1,2,4-oxadiazole (CAS 478045-81-7)
- 3-(4-Chlorobenzenesulfonyl)-2-(cyclohexylsulfanyl)-4-methyl-6-phenylpyridine (CAS 339103-35-4)
- 1-(4-Chlorobenzenesulfonyl)-3-[1-({2-fluoro-[1,1'-biphenyl]-4-yl}oxy)ethyl]-1H-pyrazole (CAS 477711-04-9)
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Recommended Standards
- 4-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]methyl}phenyl 4-methoxybenzene-1-sulfonate (CAS 338402-41-8)
- Ethyl (2E)-3-{2-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]-2-methylhydrazin-1-yl}-3-[(phenylcarbamoyl)amino]prop-2-enoate (CAS 338794-91-5)
- 4-Chlorophenyl2-acetamido-3,4,6-tetra-o-acetyl-2-deoxy-beta-d-glucopyranoside (CAS 50729-97-0)
- 4-[3-Chloro-5-(trifluoromethyl)pyridin-2-yl]-N-[2-(2-nitroethyl)phenyl]piperazine-1-carboxamide (CAS 339110-84-8)
- 5-Chloro-8-methoxyquinolin-4-ol (CAS 1153084-29-7)
- Fmoc-3-bromo-L-homophenylalanine (CAS 1260590-73-5)
- 5-Methylpyrazine-2-carboxamidine (CAS 725234-33-3)
- 3-(2,4-Difluorophenyl)-5,6,7,8-tetrahydroimidazo[1,5-a]pyrazine (CAS 949899-83-6)
- 14783-59-6 Mercury, bis((2-phenyldiazenecarbothioic acid-kappaS) 2-phenylhydrazidato-kappaN2)-, (T-4)- Mercury, bis((phenyldiazenecarbothioic acid-kappaS) 2-phenylhydrazidato-kappaN2)-, (T-4)- Mercury, bis(dithizonato)- Mercury(II) bis(dithizonate) Mercury dithizonate (CAS 14783-59-6)
- Ethyl 2-(1-ethyl-1H-pyrazol-5-yl)acetate (CAS 1339793-66-6)
- 4-Amino-5-(difluoromethyl)-3-methoxypicolinoyl chloride (CAS 1806814-11-8)
- Ethyl 2-(3-chlorobenzamido)-3-cyano-4,7-dihydrothieno[2,3-c]pyridine-6(5H)-carboxylate (CAS 864927-18-4)
- Toltrazuril Impurity 2 (CAS 94155-78-9)
- Semaglutide impurity 267 (CAS CATO-C4X-2226267)
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