3-bromo-5-methyldihydrofuran-2(3H)-one;2(3H)-Furanone, 3-bromodihydro-5-methyl-;3-Bromo-5-methyldihydro-2(3H)-furanone;alpha-Bromo-gamma-valerolactone(c,t);2-BROMO-4-HYDROXYVALERIC ACID GAMMA-LACTONE;alpha-bromo-gamma-valerolactone, mixture of;alpha-Bromo-gamma-valerolactone,mixture of cis and trans;ALPHA-BROMO-GAMMA-VALEROLACTONE, 97%, MI XTURE OF CIS AND TRANS