结果：7- 氨基-3-去乙酰氧基头孢烷酸（7-ADCA）和苯甘氨酸邓钠盐反应，只需要一步结晶即可得头孢氨苄，总收率89．4％。

Result: Through the reaction of 7-ADCA and Dane Salt, one step crystallization gives Cefalexin with the total yield 89.4% .

youdao

结果：7- 氨基-3-去乙酰氧基头孢烷酸（7-ADCA）和苯甘氨酸邓钠盐反应，只需要一步结晶即可得头孢氨苄，总收率89．4％。

Result: Through the reaction of 7-ADCA and Dane Salt, one step crystallization gives Cefalexin with the total yield 89.4% .

youdao