I read that a music CD I bought contains Isonicotinic Acid Ethyl Ester on the cover and?

I'm not sure if it's on the CD as well but is that harmful? What exactly is it?

The CD can be found here- http://www.thirtysecondstomarsstore.com/collections/frontpage/products/llfd-cd?utm_source=landingpg3&utm_medium=preorderbutton&utm_campaign=cd
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