| CAS No. | 89322-93-0 |
| Molecular Formula | C5H6N2O3S |
| Molecular Weight | 174.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
methyl 4-methoxy-1,2,5-thiadiazole-3-carboxylate (CAS 89322-93-0), molecular formula C5H6N2O3S and molecular weight 174.18 g/mol, is a CATO reference standard with documented purity and traceability.
methyl 4-methoxy-1,2,5-thiadiazole-3-carboxylate (C5H6N2O3S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures methyl 4-methoxy-1,2,5-thiadiazole-3-carboxylate 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.
| Molecular Formula | C5H6N2O3S |
| Molecular Weight | 174.18 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |