Heterocyclic Amines or Bases Cytosine  Spacefill / ball & stick Wireframe / ball & stick  Thymine  Spacefill / ball & stick Wireframe / ball & stick  Uracil  Spacefill / ball & stick Wireframe / ball & stick  Adenine  Spacefill / ball & stick Wireframe / ball & stick  Guanine  Spacefill / ball & stick Wireframe / ball & stick

Color Codes  Click-hold mouse button to move structure. C H N O P S Cl F  Click "x" box to toggle between structures.