(R,S)-1-N-(Theophyllinyl-7'-ethyl)amino-2-propanol hydrochloride 134116-30-6 1H-Purine-2,6-dione, 3,7-dihydro-1,3-dimethyl-7-(2-((2-hydroxypropyl)amino)ethyl)-, monohydrochloride, (+-)-