1-(5-chloro-2-thienyl)ethanone 2-Acetyl-5-chlorothiophene 5-chloro-2-thienyl methyl ketone 6310-09-4 InChI=1/C6H5ClOS/c1-4(8)5-2-3-6(7)9-5/h2-3H,1H ethanone, 1-(5-chloro-2-thienyl)-