CAS 67-68-5 appears in our catalog under these names: Dimethyl sulfoxide, Spectrophotometric Grade, 99.9+% , Dimethyl sulfoxide, ACS, 99.9% min , Dimethyl sulfoxide, 99+% , Dimethyl sulfoxide, anhydrous, 99.8+%, packaged under inert , Dimethyl sulfoxide, HPLC Grade, 99.9+% . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 1L, *4x1L, 500ml, 10000g, 2500g, 500g, 2.5L , 250ml.