Ethyl 2-Cyano-3,3-diethylacrylate-d6 is labelled Ethyl 2-Cyano-3,3-diethylacrylate (E907600) which is a product of Knoevenagel condensation. Ethyl 2-Cyano-3,3-diethylacrylate (E907600) can be synthesized to verify effectiveness of the silica catalysts for Knoevenagel condensation.