4-(3-Fluorophenyl)-5-thioxo-1,2,4-triazolidin-3-one CAS 263756-91-8
| CAS No. | 263756-91-8 |
| Molecular Formula | C8H6FN3OS |
| Molecular Weight | 211.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(3-Fluorophenyl)-5-thioxo-1,2,4-triazolidin-3-one (CAS 263756-91-8), molecular formula C8H6FN3OS and molecular weight 211.22 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, fluorine substitution, 4-(3-Fluorophenyl)-5-thioxo-1,2,4-triazolidin-3-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 211.22 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
CATO manufactures 4-(3-Fluorophenyl)-5-thioxo-1,2,4-triazolidin-3-one 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.
Physical & Chemical Properties
| Molecular Formula | C8H6FN3OS |
| Molecular Weight | 211.22 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Fluorophenyl Standards
- 3-(4-Fluorophenyl)-1H-indole (CAS 101125-32-0)
- 2-((4-Fluorophenyl)ethynyl)aniline (CAS 1173153-20-2)
- Methyl 2-(4-fluorophenyl)-2-(methylamino)propanoate (CAS 1178781-92-4)
- 7-(3-Fluorophenyl)-1h-indole (CAS 1214329-23-3)
- Ethyl 2-(4-fluorophenyl)-2-(methylamino)acetate (CAS 1218313-52-0)
- 2-(3-Fluorophenyl)-1H-indole (CAS 124643-63-6)
- N-(1-(4-fluorophenyl)ethyl)-N-methylglycine (CAS 1353976-40-5)
- 3-((4-Fluorophenyl)ethynyl)aniline (CAS 138781-97-2)
Recommended Standards
- 4-(1H-Pyrrolo[2,3-b]pyridin-3-yl)pyrimidin-2-amine (CAS 341998-55-8)
- 4-(3H-[1,2,3]Triazolo[4,5-b]pyridin-3-yl)aniline (CAS 62052-08-8)
- 4-((1,5-Dimethyl-1H-pyrazol-3-yl)amino)-4-oxobutanoic acid (CAS 897354-98-2)
- 4-(4-Aminophenoxy)pyridine-2-carbonitrile (CAS 630125-69-8)
- 7-chloro-5-methylimidazo[1,2-c]pyrimidine-2-carboxamide (CAS 76075-40-6)
- (Z)-3-((1H-Indol-3-yl)methylene)-6-chloroindolin-2-one (CAS 856435-34-2)
- 7-Bromoisoquinoline hydrochloride (CAS 223671-91-8)
- 3-nitropropanoic-2,2-d2 Acid (CAS CATO-CCHM704683)
- 2,3-Dihydro-1H-isoindol-1-ylmethanol hydrochloride (CAS 1965309-67-4)
- (2S,3R)-2-((tert-butoxycarbonyl)(methyl)amino)-3-methylpentanoic acid (CAS 136092-80-3)
- 4-(3-Methyl-6-oxo-5,6-dihydropyridazin-1(4H)-yl)benzoic acid (CAS 5446-13-9)
- ethyl 2-(trifluoromethyl)indolizine-1-carboxylate (CAS 1284226-15-8)
- 4-Fluoro-N-methylisoindolin-2-amine hydrochloride (CAS 1190890-18-6)
- Semaglutide impurity 244(Fmoc-His(Fmoc)-Aib-OH) (CAS CATO-C4X-2226244)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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