pentofuranosyl,imidazo,pyridazin,amine,furan,imidazo[4,5-d]pyridazin
Furan
138995-45-65,8-Ethanonaphtho[2,3-b]furan-4,9-dione,4a,5,8,8a-tetrahydro-2-(1-hydroxyethyl)-5-[(trimethylsilyl)oxy]-
118197-27-6Spiro[17H-cyclopenta[a]phenanthrene-17,2'(3'H)-furan],27-norlanost-8-ene-15,24-dione deriv.