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Patent / Jan 01, 1972
Methacycline and doxycycline from 11a-chloro-6-deoxy-6-demethyl-6-methylenetetracycline
US 3849491
Patent / Jan 01, 1972
Polymetaphosphate complexes of .alpha.-6-deoxy-5-hydroxy tetracyclines
DE 2152476
Patent / Jan 01, 1972
Production of oxytetracycline using Streptomyces alboflavus (ATCC 15388)
US 3637463