The present invention pertains to bis(methanesulfonic acid),
bis(ethanesulfonic acid), and camphoric acid salts of chemokine receptor
inhibitor N-[2-({(3R)-1-[trans-4-hydroxy-4-(6-methoxypyridin-3-yl)-cycloh-
exyl]-pyrrolidin-3-yl}amino)-2-oxoethyl]-3-(trifluoromethyl)-benzamide,
methods of preparing the same, and methods of using the same.