SEARCH Articles Figures Tables Five Heteroatoms Five-Membered Heterocycled Five-membered heterocycles Five-membered heterocycles with more than one Five-membered heterocycles with one Five-membered heterocycles with one heteroatom Five-membered heterocyclics Heteroatom heterocycles Heteroatoms Heterocycles Heterocycles with One Heteroatom Heterocycles with heteroatoms More Than