A type of chemical reaction that forms a cyclic compound.
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Benzeneacetic acid, 2-acetyl-1,2-dimethylhydrazide
(2R,3S)-3-Hydroxy-2-methyl-4-phenyl-pentanoic acid
C18H22N2O3S
(2',3',5'-tri-O-benzyl-β-D-ribofuranosyl)methylurea
3-(4-ethoxy-3-methoxyphenyl)-1-(4-hydroxyphenyl)propenone
1,2-Dihydro-1-methyl-5-phenyl-3H-pyrazol-3-one
perchlorate 2,6-dimethyl-5-phenyl-1-(4'-hydroxyphenyl)-4-oxopyrimidinium