5-(5-Bromo-1-ethyl-2-oxoindolin-3-ylidene)-3-cyclopentyl-2-thioxothiazolidin-4-one CAS 617697-73-1
| CAS No. | 617697-73-1 |
| Molecular Formula | C18H17BrN2O2S2 |
| Molecular Weight | 437.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 437.37 g/mol gives 5-(5-Bromo-1-ethyl-2-oxoindolin-3-ylidene)-3-cyclopentyl-2-thioxothiazolidin-4-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 5-(5-Bromo-1-ethyl-2-oxoindolin-3-ylidene)-3-cyclopentyl-2-thioxothiazolidin-4-one (CAS 617697-73-1), a certified reference material (molecular formula C18H17BrN2O2S2, MW 437.37 g/mol) for analytical method development and quality control.
The molecular framework of 5-(5-Bromo-1-ethyl-2-oxoindolin-3-ylidene)-3-cyclopentyl-2-thioxothiazolidin-4-one (C18H17BrN2O2S2) is characterized by a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, bromine substitution. 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. 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-(5-Bromo-1-ethyl-2-oxoindolin-3-ylidene)-3-cyclopentyl-2-thioxothiazolidin-4-one 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 | C18H17BrN2O2S2 |
| Molecular Weight | 437.37 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
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- H-Pro-AMC (hydrobromide) (CAS 115388-93-7)
- 5-chloro-4-iodo-thiochromane (CAS 1936364-08-7)
- Ethyl 3-Oxo-3-(6-quinolyl)propanoate (CAS 858646-09-0)
- 2-(1h-Indol-3-yl)-N,N-dimethylacetamide (CAS 91566-04-0)
- 8-Amino-N-(3-bromophenyl)-3,4-dihydro-2H-1,4-ethanothieno[2,3-b][1,5]naphthyridine-7-carboxamide (CAS 889955-64-0)
- rel-((1R,4R)-7,7-Dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonyl chloride (CAS 2090997-88-7)
- 1-(3,3-Diethoxypropyl)-2,5-dimethyl-1h-pyrrole (CAS 1235441-43-6)
- (1-Methyl-2-phenyl-1H-imidazol-4-yl)methanol (CAS 99280-78-1)
- Liraglutide Impurity 26 (CAS CATO-C4X-199226)
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