Acetolactone or α-acetolactone is an organic compound with formula C2H2O2. It is the smallest member of the lactone family but can also be described as the epoxide of ketene. The compound was described in 1997 as a transient species in mass spectrometry experiments.

CAS：42879-41-4
中文别名：
英文别名：Acetolactone;Oxiranone;
分子式：C2H2O2
分子量：58.0361
精确质量：58.0055
Psa：29.6
Logp：-0.4568