2,2-Bis(ethylsulfonyl)butane 2,2-Bis(ethylsulphonyl)butane 3-01-00-02790 (Beilstein Handbook Reference) 76-20-0 BRN 1785184 Butane, 2,2-bis(ethylsulfonyl)- DEA No. 2605 Diethylsulfonmethylethylmethane EINECS 200-942-4 Methylsulfonal Methylsulfonalum Methylsulphonal Metilosulfonal NSC 3994 Sulfonethylmethane Sulfonethylmethanum TRIONAL Trionalon