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US4500711A Synthesis of leucovorin 失效
甲酰四氢叶酸的合成

Synthesis of leucovorin
摘要:
In the synthesis of calcium leucovorin (calcium 5-formyl-5,6,7,8-tetrahydrofolate), the use of an amine base in the conversion of anhydroleucovorin (5,10-methenyl-5,6,7,8-tetrahydrofolic acid) to leucovorin unexpectedly results in a pure (USP) product directly from the reaction mixture.
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