Benzaldehyde (C6H5CHO) is an organic compound consisting of a benzene ring with a formyl substituent. It is the simplest aromatic aldehyde and one of the most industrially useful. This colorless liquid has a characteristic pleasant almond-like odor. In fact, benzaldehyde is the primary component of bitter almond oil and can be extracted from a number of other natural sources.[2] Benzaldehyde was first extracted from bitter almonds in 1803 by the French pharmacist Martrès.[3] In 1832 German chemists Friedrich Wöhler and Justus von Liebig first synthesized benzaldehyde.[4]