11. Meldrum misidentified the structure as a ?-lactone of ?-hydroxyisopropylmalonic acid. 12. The acid exists in equilibrium with the lactone . 13. Two molecules of lactic acid can be dehydrated to lactide, a cyclic lactone . 14. The saturated gamma-lactone series has an odor similar to that of the secretion. 15. There are two types of cardiac glycosides depending on the characteristics of the lactone moiety. 16. Glucono delta-lactone is added to lower the pH and add to shelf life. 17. From the sample Streptomyces avermitilis, naturally produced in soil, he derived macrocylclic lactone . 18. Crystal violet lactone is an example. 19. Nigrosporolide is a 14-membered lactone produced by " N . sphaerica ". 20. Do I get an acetal ( assuming no cleavage ), lactone or an ether peroxide?
