RtxPresentations07 - page 418-419

Figure 1. Purine andPyrimidineBases
O
N
N N
N
H2N
H
H
N
N N
N
NH2
H
N
N
H
O
H
O N
N
H
O
CH3 H
O N
N
H
O
NH2
Adenine Guanine
Cytosine Uracil Thymine