130187-64-3 1H-Purine-2,6-dione, 3,7-dihydro-8-((3-(butylamino)propyl)amino)-1,3-dimethyl-7-(phenylmethyl)-, monohydrochloride 7-Benzyl-8-(3-n-butylaminopropyl)aminotheophylline hydrochloride