Description General description Diethyl methylmalonate reacts with 2-cyclohexenone under abnormal Michael conditions form 2-(3-oxocyclohexyl)-2-cyclohexenone. It causes the alkylation of poly(chloromethylstyrene) during pahse transfer catalysis. Application Diethyl methylmalonate was used to investigate the effect of direct supplementation of the medium with di-ester of methylmalonate on erythromycin fermentation in Saccharopolyspora erythraea mutB strain. Packaging 100, 500 g in glass bottle