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Patent / Jan 01, 1965
Complexes of tetracyclines with N,N'-dibenzylideneethylenediimine and alkaline earth ions
BE 645682
Patent / Jan 01, 1967
Tetracycline-N,N'-dibenzylideneethylenediamine complexes for use in isolating tetracyclines
US 3280188
Patent / Jan 01, 1967
Addition compounds of chloramphenicol palmitate and calcium pantothenate
FR 1438328