Subject
organic compound
heterocyclic compound
58
amine
12
carbonyl compound
12
carboxylic acid
10
hydroxyl group
10
ketone
10
nitrogen
10
oxygen
10
carboxyl group
7
carboxylate
7
carboxylic acid ester
7
carbonyl group
3
hydrazine
3
hydroxylamine
3
azo compound
2
polyamine
2
sulfonic acid
2
acid
1
carboxylation
1
hydroxylation
1
organic complex
1
triazole
1
uracil
1
uridine
1