1-Methyl-3-ethyl-5-[2-(3-(2-carboxyethyl)-benzoxazol-2-ylidene)-ethylidene]-2-thioxo-imidazolidin-4-one CAS 219556-03-3
| CAS No. | 219556-03-3 |
| Molecular Formula | C18H19N3O4S |
| Molecular Weight | 373.43 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.
1-Methyl-3-ethyl-5-[2-(3-(2-carboxyethyl)-benzoxazol-2-ylidene)-ethylidene]-2-thioxo-imidazolidin-4-one (CAS 219556-03-3) is a high-purity analytical reference standard with the molecular formula C18H19N3O4S and a molecular weight of 373.43 g/mol.
Structurally, 1-Methyl-3-ethyl-5-[2-(3-(2-carboxyethyl)-benzoxazol-2-ylidene)-ethylidene]-2-thioxo-imidazolidin-4-one (C18H19N3O4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 373.43 g/mol, it falls into the moderately-high-molecular-weight range. 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).
CATO manufactures 1-Methyl-3-ethyl-5-[2-(3-(2-carboxyethyl)-benzoxazol-2-ylidene)-ethylidene]-2-thioxo-imidazolidin-4-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 | C18H19N3O4S |
| Molecular Weight | 373.43 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2019 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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- Peptide Impurity 64 (CAS CATO-CPTD788964)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com