2,2'-Dichloroacetic anhydride 4-02-00-00503 (Beilstein Handbook Reference) 4124-30-5 Acetic acid, dichloro-, anhydride Anhydrid kyseliny dichloroctove [Czech] BRN 0512173 Dichloroacetic acid anhydride Dichloroacetic anhydride EINECS 223-924-8 NSC 401832