Not Less Than - 95%
(2S)-1-[(2S)-6-Amino-2-[[(1S)-1-carboxy-3-phenylpropyl]amino]hexanoyl]pyrrolidine-2-carboxylic acid (as per EP) ; 1-[N2-[(S)-1-Carboxy-3-phenylpropyl]-l-lysyl]-l-proline (as per USP)