ß-propiolactone

β-propiolactone

[¦bād·ə ‚prō·pē·ə′lak‚tōn]
(organic chemistry)
C3H4O2 Water-soluble liquid that decomposes rapidly at boiling point (155°C); miscible with ethanol, acetone, chloroform, and ether; reacts with alcohol; used as a chemical intermediate.