(1S,2S)-2-(Acetoxymethyl)-1-phenylcyclopropanecarboxylic Acid is an intermediate in synthesizing rac,trans-Milnacipran Hydrochloride (M344625), which is an impurity of rac-Milnacipran Hydrochloride (M344600), an antidepressant and a selective norepinephrine and serotonin reuptake inhibitor.