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- 7-amino-3-desacetoxy cephalosporanic acid 7-氨基-3-去乙酰氧基头孢烷酸
- Keywords Cefuroxime;7-anmino cephalosporanic acid;hydrolysis;acylation; 头孢呋辛;7-氨基头孢烷酸;水解;酰化;
- He gave me a taste of his acid wit. 他让我尝到了他敏锐尖刻之机智的滋味。
- Acid irritates the stomach lining. 酸能刺激胃黏膜。
- Acid had pitted the surface of the silver. 酸把银器的表面腐蚀了。
- cephalosporanic acid 头孢烷酸
- I am doing an experiment of neutralizing acid. 我在做一个中和酸的实验。
- Can Jones beat Smith? That's the acid test. 琼斯能击败史密斯吗？那是个严峻的考验。
- amino deacetoxy cephalosporanic acid (7-ADCA) is a intermediate for cephalosporin, it is prepared from penicillin, via oxidation reaction, ring enlargement and rearrangement reaction and enzymolysis. 氨基去乙酰氧基头孢烷酸(7-ADCA)是头孢菌素合成的重要中间体,一般以青霉素为原料,经氧化,扩环-重排,裂解三步反应制备。
- A salt or an ester of boric acid. 硼酸盐一种硼酸盐或硼酸酯
- She dropped acid in high school. 她高中时代服迷幻药。
- The metal is fretted with the acid. 金属被酸腐蚀。
- The chemical can behave as an acid. 这种化学制品能起酸的作用。
- The acid has eaten through the metal cover. 酸已把金属盖子蚀穿了。
- The worker's overalls were badly burned by acid. 这位工人的工作装被酸腐蚀得很厉害。
- An acid can react with a base to form a salt. 酸可以和碱起反应而生成盐。
- This substance must be treated with acid. 这材料得用酸来处理。
- The acid burnt a hole in the carpet. 酸把地毯烧了个洞。
- Carbolic acid can be used to make antiseptic. 石炭酸可用来做防腐剂。
- The acid eats into metals quickly. 酸腐蚀金属很快。
