Thymine65-71-4100 % similar 2-Thiothymine636-26-059 % similar 5-Iodouracil696-07-157 % similar 5-Hydroxy-2,4(1H,3H)-pyrimidinedione20636-41-356 % similar 5-Chlorouracil1820-81-152 % similar 5-Bromouracil51-20-752 % similar 5-Fluorouracil51-21-852 % similar 5-Aminouracil932-52-552 % similar 5-Ethyl-2,4(1H,3H)-pyrimidinedione4212-49-152 % similar 5-Methoxyuracil6623-81-052 % similar 5-(Hydroxymethyl)uracil4433-40-348 % similar 5-Acetyl-2,4(1H,3H)-pyrimidinedione6214-65-947 % similar 5-Formyluracil1195-08-047 % similar 5-(Trifluoromethyl)uracil54-20-647 % similar 1,2,3,4-Tetrahydro-2,4-dioxo-5-pyrimidinecarboxylic acid23945-44-044 % similar Lumichrome1086-80-243 % similar 5-Nitro-2,4(1H,3H)-pyrimidinedione611-08-543 % similar Ethyl 1,2,3,4-tetrahydro-2,4-dioxo-5-pyrimidinecarboxylate28485-17-840 % similar 6-Azathymine932-53-640 % similar 5-Chloro-3-methyl-2(1H)-pyridinone58498-61-639 % similar