It is the "ortho" isomer of the three isomeric benzenediols. It is one of two isomeric unsaturated dicarboxylic acids, the other being maleic acid. The resulting product was a mixture of four isomeric carboxylic acids. The molecule is one of the three isomeric amines of pyridine. Many isomeric alcohols have the formula CHOH. Ethylene oxide is isomeric with acetaldehyde and with vinyl alcohol. It is one of three isomeric monochloride derivatives of phenol. Chlorotoluene is a group of three isomeric chemical compounds. Urea dissolved in water is in equilibrium with the isomeric ammonium cyanate. These residue contains a few percent by weight of phenol and isomeric cresols. It is a colorless liquid manufactured by the thermal dehydrogenation of isomeric diethylbenzenes. Ocimenes are a group of isomeric hydrocarbons. This residue contains a few percent by weight of phenol and isomeric cresols. Under illumination, these molecules cycle between the two isomeric states. The terpinenes are a group of isomeric hydrocarbons that are classified as monoterpenes.