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... LACTONE ... (33 elements)

BUTYROLACTONES · DEHYDROTESTOLACTONE · FURANOLACTONE · GLUCURONOLACTONE · LACTONE · MYCOLACTONE · SANTOLACTONE · SPIROLACTONES · TESTOLACTONE · WEDELOLACTONE

... OLACTON ... (33 elements)

BUTYROLACTONES · DEHYDROTESTOLACTONE · FURANOLACTONE · GLUCURONOLACTONE · MYCOLACTONE · SANTOLACTONE · SPIROLACTONES · SPIRONOLACTONE · TESTOLACTONE · WEDELOLACTONE

... IOLACTONE ... (3 elements)

PROPIOLACTONE · THIOLACTONE

... NOLACTONE ... (6 elements)

FURANOLACTONE · GLUCURONOLACTONE · GULONOLACTONE · SPIRONOLACTONE

... OLACTONES ... (3 elements)

BUTYROLACTONES · SPIROLACTONES

... ROLACTONE ... (9 elements)

BUTYROLACTONE · BUTYROLACTONES · CAPROLACTONE · GLUCUROLACTONE · POLYCAPROLACTONE

... TOLACTONE ... (4 elements)

DEHYDROTESTOLACTONE · SANTOLACTONE · TESTOLACTONE