cisbut2enoic
cisbut2enoic acid, also known as crotonic acid, is an unsaturated carboxylic acid with the chemical formula C4H6O2. It is an isomer of butenoic acid, specifically the cis isomer, meaning that the two hydrogen atoms attached to the double bond are on the same side. It is a colorless crystalline solid with a pungent odor. cisbut2enoic acid is soluble in water and ethanol. It is a weak acid. It occurs naturally in some plants, such as croton oil. Industrially, it can be produced by the isomerization of transbut2enoic acid (also known as crotonic acid) or by the oxidation of butanal. cisbut2enoic acid has various applications, including as a precursor in the synthesis of other organic compounds, such as polymers and pharmaceuticals. It can also be used as a food additive. It is important to distinguish cisbut2enoic acid from its trans isomer, transbut2enoic acid, as they have different physical properties and chemical reactivities.