Ethyl butyrate

Ethyl butyrate, also known as ethyl butanoate, or butyric ether, is an ester with the chemical formula CH3CH2CH2COOCH2CH3, with one oxygen having a double bond. It is soluble in propylene glycol, paraffin oil and kerosene.

Uses
It is commonly used as pineapple flavoring, solvent, in perfumery products and as a plasticizer for cellulose.