描述
Diethyl malonate is a flavouring ingredient. It is a rather simple dicarboxylic acid, with two carboxyl groups close together in its molecule. In forming diethyl malonate from malonic acid, the hydroxyl group (-OH) on both of the carboxyl groups is replaced by an ethoxy group (-OEt; -OCH2CH3). The methylene group (-CH2-) in the middle of the malonic part of the diethyl malonate molecule is neighboured by two carbonyl groups (-C(=O)-). Diethyl malonate is found in alcoholic beverages such as wines, and in fruits such as guava, melon, concord grape, pineapple, blackberry.