酸性下
(1)強酸下脫水成anhydrotetracycline
(2)酸性下eipmerization成4-epitetracycline
(3)4-epianhydrotetracycline會誘發Fanconi-like syndrome
(4)鹼性下形成isotetracycline
23 Natural tetracycline 之分解產物具腎毒性而生Fanco..-阿摩線上測驗