1H-Imidazo(4,5-h)isoquinoline-7,9(6H,8H)-dione, 8-(3-(diethylamino)propyl)-6,6-dimethyl-2-phenyl-, dihydrochloride 69835-39-8 8-(3-Diethylaminopropyl)-6,6-dimethyl-(2-phenyl-1H-imidazo(4,5h))isoquinoline-7,9-(6H)-dione AR-LH 31 AR-LH31