Cinnamic acid (Cinnamicacid) and hydrogenated cinnamic acid (Cinnamicalcohol) are two different organic compounds.

Cinnamic acid is a white crystalline solid with an aromatic odor and is commonly used as an additive in food, medicine, and spices. Its chemical formula is C9H8O2 and its molecular weight is 148.16g/mol.

Hydrogenated cinnamic acid, also known as cinnamylalcohol, is a white crystalline solid with a typical cinnamon aroma, which can be obtained from cinnamic acid through a reduction reaction. Its chemical formula is C9H10O and its molecular weight is 134.18g/mol.

The two compounds are different in chemical structure, but both contain aromatic benzene rings and acryloyl groups. They also differ greatly in chemical properties and uses. Cinnamic acid is often used to synthesize other organic compounds, such as aromatic amino acids, flavors and fragrances, while hydrocinnamic acid is often used to prepare glucocorticoids, mosquito repellents and other drugs.