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- Tolcapone was synthesized from 3,4 dihydroxybenzoic acid via 4 steps.The overall yield was 10 7%. 以3,4-二羟基苯甲酸为原料,经4步反应合成帕金森氏治疗药托卡朋,总收率107%25。
- Keywords Chemiluminescent inhibition;Luminol;3;4 dihydroxybenzoic acid;FIA; 化学发光抑制作用;鲁米诺;3.;4-二羟基苯甲酸;流动注射;
- Dihydroxybenzoic acid was prepared by carboxylation of resorcinol in solvent under under atmospheric pressure was studied. 研究了间苯二酚常压羧化法制备2,6-二羟基苯甲酸。
- The doors were numbered 2,4, 6 and 8. 这些门编为2、 4、 6、 8号。
- Will 2,000 dozens be enough for selling? 两千打够卖吗？
- The number 2 generates the set 2,4,8,16. 2是2，4，8，16这组参数的基数。
- The counselor bilked his clients out of$2 million. 那位顾问从他的顾客那里骗取了200万美元。
- Every afternoon the baby takes a nap for 2 hours. 每天下午宝宝都要睡两个小时。
- He added 2 gallons of fuel to his car. 他给汽车加了2加仑油。
- She demonstrated that 2 and 2 are four. 她证明2加2等于四。
- If you subtract 2 from 8, you get 6. 8减去2是6。
- The book will run to nearly 2,000 pages. 这本书将厚达两千页之多。
- dihydroxybenzoic acid 二羟基苯甲酸
- The bridge is almost 2 kilometers long. 这座桥差不多有两公里长。
- The diameter of the tree-trunk is about 2 meters. 这树干的直径大约是2米。
- This fossil may be over 2 million years old. 这化石可能超过二百万年了。
- I have 4 books and 2 magazines to check out. 我有4本书和2本杂志要借。
- The bridge is almost 2 kilometres long. 这座桥差不多有两公里长。
- A lamb with 2 tails is a freak of nature. 有两条尾巴的小羊是畸形的。
- He condensed his report from 2,000 words to 1,000. 他将报告从两千字压缩到一千字。
