Cinnamic acid is used in flavours, synthetic indigo, and certain pharmaceuticals, Chemical Name: (e)-3-phenyl-2-propenoic acidMolecular Formula: C9H8O2Molecular Weight: 148.16CAS NO: 140-10-3 Structural Formula: Properties: white or light yellow crystal powder, has cinnamon bark smell, m.p. =128°C, b.p. 300°C; slightly soluble in water, soluble in ethanol. Quality Index: Item Index Best Quality ...