Hept-2-enoic acid, also known as 庚烯酸, is an unsaturated fatty acid that appears as a clear, colorless liquid with a strong, spicy, anise-like odor. This compound is frequently used in the flavor and fragrance industry and serves as an intermediate for synthesizing various organic compounds, including pharmaceuticals and agrochemicals. Its unique chemical properties make it a vital component in numerous industrial applications such as food and beverage production, cosmetics, and personal care products.