.beta.,.beta.-Pentamethylene-.alpha.-butyrolactone 2-Oxaspiro[4.5]decan-3-one 7236-78-4 Cyclohexaneacetic acid, 1-(hydroxymethyl)-, .gamma.-lactone GO 177 Godecke NSC169568 WLN: T5OV DXTJ D-& AL6XTJ