Cyclopentadienone is an organic compound with molecular formula C5H4O. The parent cyclopentadienone is rarely encountered, because it rapidly dimerizes. Many substituted derivatives are known, notably tetraphenylcyclopentadienone. Such compounds are used as ligands in organometallic chemistry.

CAS：13177-38-3
中文别名：
英文别名：2,4-Cyclopentadien-1-one;Cyclopentadienon;
分子式：C5H4O
分子量：80.0847
精确质量：80.0262
Psa：17.07
Logp：0.6815