1H-Purine-2,6-dione, 3,7-dihydro-7-(2-hydroxypropyl)-1,3-dimethyl-, mixt. with 3,7-dihydro-1,3-dimethyl-1H-purine-2,6-dione and 7-(2,3-dihydroxypropyl)-3,7-dihydro-1,3-dimethyl-1H-purine-2,6-dione 87531-63-3 Nebetol Neo-biphyllin Neobiphylline