Dereplication /(?)/

De·rep·li·ca·tion

Dereplication

n.
  1. the process of testing samples of mixtures which are active in a screening process, so as to recognize and eliminate from consideration those active substances already studied; -- a stage subsequent to the preliminary screening in the process of discovery of new pharmacologically active substances in mixtures of natural products; -- also called counterscreening. See screening. (Biochem.)