Purpose To prepare trenbolone acetate in five steps from estra 4,9 diene 3,17 dione. Methods Estra 4,9 diene 3,17 dione(1) was treated with methanol in the presenece of p? toluenesulfonic acid to give 3,3?是什么意思_Purpose To prepare trenbolone acetate in five steps from estra 4,9 diene 3,17 dione. Methods Estra 4,9 diene 3,17 dione(1) was treated with methanol in the presenece of p? toluenesulfonic acid to give 3,3?在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句