(2R)-1-[6-[(2R)-2-carboxypyrrolidin-1-yl]-6-oxohexanoyl]pyrrolidine-2-carboxylic acid (2R)-1-[6-[(2R)-2-carboxypyrrolidin-1-yl]-6-oxo-hexanoyl]pyrrolidine-2-carboxylic acid (2R)-1-[6-[(2R)-2-carboxy-1-pyrrolidinyl]-1,6-dioxohexyl]-2-pyrrolidinecarboxylic acid (2R)-1-[6-[(2R)-2-carboxypyrrolidin-1-yl]-6-keto-hexanoyl]proline 224624-80-0 1,1'-(1,6-Dioxo-1,6-hexanediyl)bis-D-proline CPOHPC acid D-Proline, 1,1'-(1,6-dioxo-1,6-hexanediyl)bis- R-1-(6-(R-2-carboxypyrrolidin-1-yl)-6-oxohexanoyl)pyrrolidine-2-carboxylic acid Ro 63-8695 cphpc