6-Aminouracil873-83-630 % similar Xanthopterin monohydrate5979-01-130 % similar 2,6-Diamino-5-nitroso-4(3H)-pyrimidinone2387-48-630 % similar 4-(1,1-Dimethylethyl)-6-(trifluoromethyl)-2-pyrimidinamine238742-83-130 % similar Melamine cyanurate37640-57-630 % similar Ammelide645-93-230 % similar