3-Ethoxy-4-methoxy-1,2,5-thiadiazole 1,1-dioxide CAS 1379185-66-6
| CAS No. | 1379185-66-6 |
| Molecular Formula | C5H8N2O4S |
| Molecular Weight | 192.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 3-Ethoxy-4-methoxy-1,2,5-thiadiazole 1,1-dioxide (C5H8N2O4S) is characterized by a carbohydrate-derived structure, an amide group, a sulfone group. 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. 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 supplies 3-Ethoxy-4-methoxy-1,2,5-thiadiazole 1,1-dioxide (CAS 1379185-66-6), a certified reference material (molecular formula C5H8N2O4S, MW 192.19 g/mol) for analytical method development and quality control.
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-Ethoxy-4-methoxy-1,2,5-thiadiazole 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.
Physical & Chemical Properties
| Molecular Formula | C5H8N2O4S |
| Molecular Weight | 192.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 3-Amino-3-methylbutanoic acid (CAS 625-05-8)
- (3R,4S)-rel-4-(3-Fluorophenyl)pyrrolidine-3-carboxylic acid hydrochloride (CAS 1284227-02-6)
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- [(2-Methylphenyl)methyl](prop-2-en-1-yl)amine (CAS 243462-40-0)
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