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lactaldehyde
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Lactaldehyde is an intermediate in the methylglyoxal metabolic pathway. Methylglyoxal is converted to D-lactaldehyde by glycerol dehydrogenase (gldA). Lactaldehyde is then oxidized to lactic acid by aldehyde dehydrogenase.
Lactaldehyde exists in several forms: in open-chain form and as cyclic hemiacetal; in solution and in crystal forms; as monomer and as dimer. In crystal form, three conformers occur as hemiacetal dimers with a 1,4-dioxane ring skeleton:
In equilibrium solution, negligibly small amounts of the monomer and at least one five-membered ring dimer exist.
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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