other uracil analogues including 5- ( hydroxymethyl ) uracil , 5-fluorouracil , 5-aminouracil , 6-azauracil , and 2-thiouracil or analogues of apyrimidinic sites such as deoxyribose and deoxyribose 5'-phosphate did not inhibit activity .
C0041917
uracil
C0016360
5-fluorouracil