Cinnamic Aldehyde is naturally found in cinnamon oil, cassia oil, and patchouli oil. It appears pale yellow viscous liquid with cinnamon and a spicy odor. Cinnamic aldehyde has Cis-isomer and trans-isomer. Cinnamic Aldehyde is industrially prepared by condensation of benzaldehyde and acetaldehyde in dilute alkali solution. It is widely used in flavor and fragrance formulation of daily chemical products and agriculture.