1-(2,3-Dihydro-2-methyl-5-benzofuranyl)-3-(dimethylamino)-1-propanone hydrochloride 1-Propanone, 1-(2,3-dihydro-2-methyl-5-benzofuranyl)-3-(dimethylamino)-, hydrochloride 93591-74-3 beta-Dimethylaminopropionyl 2-methyl coumaran hydrochloride