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?? ??? ???? ??? ?? ??, ??, ?? ??? ???.

?? ??	CAS	MF
α-???-γ-?????	517-23-7	C6H8O3
???? ??	1120-71-4	C3H6O3S
2-Bromo-4-butanolide	5061-21-2	C4H5BrO2
?????	96-48-0	C4H6O2
??-???-??-?????	547-65-9	C5H6O2
(S)-5-Hydroxymethyldihydrofuran-2-one	32780-06-6	C5H8O3
delta-Valerolactone	542-28-9	C5H8O2
beta-Methacryloyloxy-gamma-butyrolactone	130224-95-2	C8H10O4
??-??????	57-57-8	C3H4O2
ALPHA-HYDROXY-GAMMA-BUTYROLACTONE	19444-84-9	C4H6O3
Crystal violet lactone	1552-42-7	C26H29N3O2
??-??-?????	1679-47-6	C5H8O2
??????	674-26-0	C6H10O3
D-ERYTHRONOLACTONE	15667-21-7	C4H6O4
DL-??	79-50-5	C6H10O3
D-????	599-04-2	C6H10O3
(R)-(+)-3-Hydroxybutyrolactone	58081-05-3	C4H6O3
?????	3068-88-0	C4H6O2
??????? ??	4702-32-3	C6H6O6
ALPHA-ACETYL-ALPHA-METHYL-GAMMA-BUTYROLACTONE	1123-19-9	C7H10O3
??,??-DIPHENYL-??-?????	956-89-8	C16H14O2
GAMMA-PHENYL-GAMMA-BUTYROLACTONE	1008-76-0	C10H10O2

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