5-(Benzyloxy)-2-((benzyloxy)carbonyl)-3-hydroxy-5-oxopentanoic Acid is an intermediate used in the synthesis of 2-[2-[(5-carboxypentyl)amino]-2-oxoethyl]-2-hydroxybutanedioic Acid (C181175), which is derived from Methyl 6-Aminohexanoate Hydrochloride (M287100), which is used as a reagent to synthesize straight chain hydroxamates, compounds that act as inhibitors of Human Histone Deacetylase (HDAC) that have the potential to treat cancer. Methyl 6-aminohexanoate is also sometimes used as a spacer unit for peptide synthesis.