Bis(dimethylarsine) oxide is a chemical compound registered under CAS number 503-80-0, with the molecular formula C4H12As2O and a molecular weight of about 225.98 g/mol. It is also known as Bis(dimethylarsinous)anhydride; Oxybis(dimethylarsine); TL-297. DeWeiChem supplies Bis(dimethylarsine) oxide for laboratory research and bulk production; product code 707633. Send an inquiry for purity, packaging, price and lead time.