beta-Butyrolactone.
D015107:4-Butyrolactone / Q000031:analogs & derivatives* / Q000737:chemistry / Q000633:toxicity; D000818:Animals; D015197:Carcinogenicity Tests; D002273:Carcinogens / Q000737:chemistry / Q000633:toxicity*; D006801:Humans; D009374:Neoplasms, Experimental / Q000139:chemically induced*
D002273:Carcinogens; C013426:beta-butyrolactone; D015107:4-Butyrolactone