Subject
organic compound
11
organic synthesis
10
heterocyclic compound
8
aromatic compound
4
thiazole
4
acetal
3
chemical reaction
3
cyclic compound
3
double bond
3
furan
3
macromolecule
3
amine
2
indole
2
ketene
2
nitroso compound
2
thiophene
2
acridine
1
amino acid
1
ammonium compound
1
anion
1
azide
1
azine
1
azo compound
1
calcium organic compound
1
carbanion
1
carbonium ion
1
diazo compound
1
hydrazine
1
hydrocarbon
1
hydroxylamine
1
imine
1
nitrene
1
nitro compound
1
oxime
1
pyridine
1
pyrrole
1
radical
1