Excipient (pharmacologically inactive substance)
What is it?
Ethyl isovalerate (C7H14O2) is a food-grade, fruity flavor ester agent used in industry. It exists as a colorless liquid. It is flammable and can lead to mild skin irritation, per the MSDS.
 Sigma Aldrich. Ethyl isovalerate. Accessed April 1, 2014. http://www.sigmaaldrich.com/MSDS/MSDS/DisplayMSDSPage.do?country=US&language=en&productNumber=W246301&brand=ALDRICH&PageToGoToURL=http%3A%2F%2Fwww.sigmaaldrich.com%2Fcatalog%2Fproduct%2Faldrich%2Fw246301%3Flang%3Den