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(E)-non-2-enal is a monounsaturated fatty aldehyde consisting of (2E)-non-2-ene with an oxo group at position 1. Its primary role is as a plant metabolite, and it falls under the categories of a monounsaturated fatty aldehyde, an enal, and a medium-chain fatty aldehyde. 2-Nonenal is a natural compound found in various sources, including Fuscopostia leucomallella, Vaccinium macrocarpon, and it is also a metabolite produced by Saccharomyces cerevisiae. This organic compound is an unsaturated aldehyde. It is a colorless liquid with specific characteristics that make it notable: 2-Nonenal consists of a nine-carbon carbon chain with a double bond between the 2nd and 3rd carbons (counting from the aldehyde end), and it features an aldehyde functional group (CHO) at one end. Aldehydes, including 2-Nonenal, are known for their distinctive odors, and the presence of the double bond can make them reactive under certain conditions. 2-Nonenal is found in various foods and beverages, with a notable association with the aroma of aged beer and specific fried foods. Due to its unique aroma profile, 2-Nonenal finds applications in the flavor and fragrance industry. Interestingly, 2-Nonenal has been identified as one of the components contributing to the distinct "aging odor" associated with elderly individuals. It results from changes in skin oil composition and the oxidation of these oils during aging.

GHS Hazard Statements

• H315 (99.93%): Causes skin irritation [Warning Skin corrosion/irritation]

Chemical and Physical Properties

Source: PubChem