Patent Polymetaphosphate complexes of .alpha.-6-deoxy-5-hydroxy tetracyclines Jan 01, 1972 DE 2152476
Patent Complexes of chloramphenicol palmitate with calcium pantothenate Jan 01, 1969 FR 5815 19680401
Patent Addition compounds of chloramphenicol palmitate and calcium pantothenate Jan 01, 1967 FR 1438328
Patent Tetracycline-N,N'-dibenzylideneethylenediamine complexes for use in isolating tetracyclines Jan 01, 1967 US 3280188