| CAS No. | 338749-59-0 |
| Molecular Formula | C13H11ClN2O2S2 |
| Molecular Weight | 326.82 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 326.82 g/mol gives 4-(2-(4-Chlorophenyl)hydrazono)-2,3-dihydro-4H-thieno[2,3-b]thiopyran 1,1-dioxide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 4-(2-(4-Chlorophenyl)hydrazono)-2,3-dihydro-4H-thieno[2,3-b]thiopyran 1,1-dioxide (CAS 338749-59-0), a certified reference material (molecular formula C13H11ClN2O2S2, MW 326.82 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, 4-(2-(4-Chlorophenyl)hydrazono)-2,3-dihydro-4H-thieno[2,3-b]thiopyran 1,1-dioxide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 326.82 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
| Molecular Formula | C13H11ClN2O2S2 |
| Molecular Weight | 326.82 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |