N epsilon-trifluoroacetyl-L-lysyl-L-proline.D-1O-camphorsulfonic acid salt and process for producing the same.

摘要

N< epsilon >-Trifluoroacetyl-L-lysyl-L-proline.D-10-camphorsulfonic acid salt is produced in very high purity by reacting Ne-trifluoroacetyl-L-lysyl-L-proline with D-10-camphorsulfonic acid in a suitable solvent. The salt is extremely stable at ambient temperature as compared with other salts of N< epsilon >-trifluoroacetyl-L-lysyl-L-proline including the known dicyclohexylamine salt.