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- Etamsylatam was prepared from hydroquinone through sulfonation in sulfuric acid and salt formation with diethylamine. 对苯二酚经硫酸磺化,与二乙胺成盐得止血敏。
- In drilling engineering,drill pipe often sticks in salt formation because of wellbore shrinkage. 在钻井工程中,盐岩层井眼易发生缩径卡钻。
- The mathematical model for simulating performance of gas storage cavern in salt formation is presented. 提出了一个描述天然气盐穴地下储气库注采动态过程的数学模型。
- Reslts:Bambuterol hydrochloride was synthesized by three steps,reduction,condensation,and salt formation. 结果:经缩合、还原、成盐3步反应合成盐酸班布特罗。
- METHODS:It was synthesized from 2, 6 dichlorophenol and 2 chloropropinitrile via three steps of etherification, cyclization and salt formation. 方法:以二氯苯酚和2氯丙腈为起始原料,经成醚,环合和成盐反应三步得到目标化合物。
- Cefquinome sulfate was prepared from cefotaxime via 3-substitution,salt formation,and salt exchange with sulfuric acid by anion exchange resin. 以头孢噻肟酸为原料;经3位取代、成盐、离子交换、硫酸成盐;最终得到标题化合物;总收率35.;9%25。
- METHOD Bambuterol hydrochloride was synthesis by five steps, esterification Bromination, reduction, condensation and salt formation. 目的改进盐酸班布特罗的合成工艺。
- Well drilling in a salt formation is a problem in drilling,while accurately establishing the mud density and undersaturation is the key for solving the problem. 盐层钻井是钻井技术中的难题,准确确定钻井液密度及含盐欠饱和度是解决难题的关键。
- Abstract: Among the procedure of tobramycin production, hydrolysis of the fermantation solution, purification by ion exchange chromatography and salt formation has been studied. 摘 要: 对硫酸妥布霉素生产中发酵液的水解、离子交换层离、成盐等条件进行了研究。
- Tinoridine hydrochloride was synthesized from benzylamine by condensation, cyclization, decarboxylation, cyclization and then salt formation in an overall yield of 55.2%. 以苄胺为起始原料,经缩合、成环、脱羧、环合、成盐等5步反应得到目标化合物盐酸替诺立定。反应总收率55。2%25。
- It is prepared based on iraidazolidinone, methyl sulfuryl chloride and 6-APA through substitution, acylchlorization, condensation and salt formation reaction. 美洛西林对某些疾病的治疗已与头孢类抗生素的疗效相当,在治疗小儿痢疾时疗效良好,被中华医学会建议用来治疗医源性肺炎。
- Well drilling in a salt formation is a problem in drilling, while accurately establishing the mud density and undersaturation is the key for solving the problem. 盐层钻井是钻井技术中的难题,准确确定钻井液密度及含盐欠饱和度是解决难题的关键。
- Terazosin hydrochloride dihydrate was synthesized from 6,7 dimethoxy 1 H,3H quinazolin 2,4 dione via chlorination, amination, condensation and salt formation in an overall yield of 64.3%. 以 6 ;7-二甲氧基 - 1H;3H-喹唑啉 - 2 ;4-二酮为原料 ;经氯化、氨化、缩合、成盐制得盐酸特拉唑嗪 ;总收率6 4.;3%25。
- P-aminobenzoate potassium was synthesized from p-nitrotoluene through oxidation,reduction, salt formation and crystallization. The total yield was 77.5%.The procedure is practical. 以对硝基甲苯为原料;经氧化、还原、成盐、结晶等反应;合成对氨基苯甲酸钾。该工艺操作简单;条件温和;总收率可达77.;5%25;具有较强的实用性。
- Methods:Starting from 5-cyanophthalide, escitalopram oxalate was prepared via several steps including nucleophilic addition, hydrolysis, chemical separation, cyclization and salt formation. 方法:以5-氰基苯酞为起始原料,经亲核加成、水解、化学拆分、环化和成盐等反应制得抗抑郁药草酸依地普仑。
- Salt is a common food preservative. 盐是一种常用的食物防腐剂。
- He spoiled the soup by putting too much salt in it. 他放了太多的盐,把那盘汤糟蹋了。
- My hair kinked up in the salt water. 我的头发在盐水中缠在一起了。
- Add salt, pepper and a dash of vinegar. 加盐、胡椒粉和一点儿醋。
- She is economical in her use of salt when cooking. 她烹饪时用盐很少。