| CAS No. | 1323953-37-2 |
| Molecular Formula | C18H8Br2N4O4S4 |
| Molecular Weight | 632.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
4,8-Bis(7-bromo-2,3-dihydrothieno[3,4-b]-1,4-dioxin-5-yl)-2λ4δ2-benzo[1,2-c:4,5-c′]bis[1,2,5]thiadiazole (CAS 1323953-37-2), molecular formula C18H8Br2N4O4S4 and molecular weight 632.35 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, bromine substitution, 4,8-Bis(7-bromo-2,3-dihydrothieno[3,4-b]-1,4-dioxin-5-yl)-2λ4δ2-benzo[1,2-c:4,5-c′]bis[1,2,5]thiadiazole is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 632.35 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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), 4,8-Bis(7-bromo-2,3-dihydrothieno[3,4-b]-1,4-dioxin-5-yl)-2λ4δ2-benzo[1,2-c:4,5-c′]bis[1,2,5]thiadiazole 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.
| Molecular Formula | C18H8Br2N4O4S4 |
| Molecular Weight | 632.35 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 4 |