(R,S)-1-N-(Theophyllinyl-7'-ethyl)-1-methylamino-2-propanol hydrochloride 134116-31-7 1H-Purine-2,6-dione, 3,7-dihydro-1,3-dimethyl-7-(2-((2-hydroxypropyl)methylamino)ethyl)-, monohydrochloride, (+-)-