This invention relates to a novel salt form of dopamine agonist 5-[(2R,5S)-5-methyl-4-propylmorpholin-2-yl]pyridin-2-amine (I): ##STR00001## More particularly, this invention relates to 5-[(2R,5S)-5-methyl-4-propylmorpholin-2-yl]pyridin-2-amine di-(1S)-camphorsulfonate (di-S-camsylate) and to processes for the preparation of, intermediates used in the preparation of, compositions containing, and the uses of this salt.