6-amino-5-hydroxynicotinic acid

4-methyl-1,5-naphthyridin-2-amine

8-methoxy-1,2,3,4-tetrahydro-1,6-naphthyridine

2,7-dimethoxy-1,8-naphthyridine-4-carbaldehyde

3-(2,3-dihydro-1,4-benzodioxin-6-yl)-1-methyl-1{H}-pyrazole-5-carboxylic acid

6-ethoxypyridazine-3-carboxylic acid

(pyridazin-3-ylthio)acetic acid

(4-methyl-6-oxopyrimidin-1(6{H})-yl)acetic acid

3-chloro-6-(3-nitrophenyl)pyridazine

6-piperazin-1-yl[1,2,4]triazolo[4,3-b]pyridazine

3-(4-fluorophenyl)pyrimidine-2,4(1H,3H)-dione