Glyoxylic Acid, also known as xoacetic acid is one of the C2 carboxylic acids, which is any of a class of organic compounds in which a carbon (C) atom is bonded to an oxygen (O) atom by a double bond and to a hydroxyl group (−OH) by a single bond. Glyoxylic Acid contains an aldehyde functional group and the chemical formula is usually described as OCHCO2H. The aldehyde functional group is not observed in solution or as a solid and it exists mainly as hydrate with its electron-withdrawing substituents generally. So, the chemical formula of Glyoxylic Acid is described as the monohydrate in general, just as (HO)2CHCO2H.
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