153570-58-2 1H-Inden-2-amine, 2,3-dihydro-5,6-dimethoxy-N,N-dipropyl-, hydrochloride 5,6-Dimethoxy-N,N-dipropyl-2,3-dihydro-1H-inden-2-amine hydrochloride 83598-46-3 PNU 99194A U 99194A