dihydroxyacetone phosphate

…in muscle); the products are dihydroxyacetone phosphate and glyceraldehyde. It will be recalled that dihydroxyacetone phosphate is an intermediate compound of glycolysis. Although glyceraldehyde is not an intermediate of glycolysis, it can be converted to one (glyceraldehyde 3-phosphate) in a reaction involving the conversion of ATP to ADP.

…catalyzed by glycerol 1-phosphate dehydrogenase, dihydroxyacetone phosphate is reduced to glycerol 1-phosphate. Reduced NAD⁺ provides the reducing equivalents for the reaction and is oxidized. This compound reacts further (see below Other components).