CAS 123-91-1 appears in our catalog under these names: 1,4-Dioxane, ACS, 99+%, stab. with 1-3ppm BHT , 1,4-Dioxane, 99+%, stab. with ca 5-10ppm BHT , 1,4-Dioxane, anhydrous, 99.8%, stab. with 1-3ppm BHT, packag, 1,4-Dioxane, HPLC Grade, 99% min , 1,4-Dioxane, HPLC Grade, 99% min, packaged under Argon in re. Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 500ml, *4x500ml, 1L, 4L , 2500g, 500g, 100ml, *4x1L.