1-(5-Chloro-2-thienyl)ethan-1-one 5-17-09-00391 (Beilstein Handbook Reference) 5-Chlor-2-acetyl thiophen 5-Chloro-2-acetyl thiophen 6310-09-4 AI3-15902 BA 11044 BRN 0113936 EINECS 228-630-3 Ethanone, 1-(5-chloro-2-thienyl)- Ketone, 5-chloro-2-thienyl methyl NSC 43020