Diethyl ether, or simply ether, is an organic compound in the ether class with the formula 2O. It is a colorless, highly volatile flammable liquid. It is commonly used as a solvent in laboratories and as a starting fluid for some engines. Formula: (C2H5)2O Density: 713 kg/m³ Boiling point: 34.6 °C Molar mass: 74.12 g/mol IUPAC ID: Ethoxyethane Melting point: -116.3 °C

Diethyl malonate, also known as DEM, is the diethyl ester of malonic acid. It occurs naturally in grapes and strawberries as a colourless liquid with an apple-like odour, and is used in perfumes. It is also used to synthesize other compounds such as barbiturates, artificial flavourings, vitamin B1, and vitamin B6.