2,3-Dihydroxy-6-methyl-7-(phenylmethyl)-4-propyl-1-naphthalenecarboxylic Acid-d5 is the labeled analogue of 2,3-Dihydroxy-6-methyl-7-(phenylmethyl)-4-propyl-1-naphthalenecarboxylic Acid (D453265), used in the synthesis of novel lactate dehydrogenase A inhibitors.This compound is suitable for lactate dehydrogenase (LDH) related research.