盐酸盐

A reaction mechanism is proposed to involve one pre-equilibria. First we select a Pt model drugs Na_2PtCl_6 to oxidate L- cysteine and L- cysteine hydrochloride, and study the kinetics of the reaction.

对L-半胱氨酸及其盐酸盐是一级反应的实验结果，建立了半光氨酸一个前期平衡的化学动力学机理，根据该机理圆满解释了实验现象和结果。

Those compounds were prepared by means of the Mannich reaction from the correspondingthiochromanone,amine and paraformaldehyde.

这些化合物是用相当的酮、胺类盐酸盐与聚甲醛进行 Mannich 反应制得。

It includes the following steps: polymerizing 2, 4-dihydroxyl metaphenylene diamine hydrochloride, diamine monomer and dipic acid anhydride to gain the polyimide that contains hydroxy on the molecule chain, making the hydroxyl take esterification reacting with acyl chloride and acrylic acid to gain polyimide photosensitive material that has negative photonasty.

该聚酰亚胺光敏材料以2，4-二羟基间苯二胺盐酸盐，二胺单体和二酸酐为原料进行聚合，得到分子链上含羟基的聚酰亚胺，然后使羟基与丙烯酸及其衍生物的酰氯发生酯化反应，得到具有负性感光性能的聚酰亚胺光敏材料。

Dichlorophenyl piperazine hydrochloride is an important pharmaceutical intermediate.

二氯苯基哌嗪盐酸盐是重要的医药中间体。

Pharmaceutical Industry for the production of Bicyclohexane Piperidine BENZTROPINE Dihydrobrohide, diphenhydramine hydrochloride salt.

医药工业中用于生产双环己哌啶、苯甲托品氢溴酸盐，苯海拉明盐酸盐等。

The Pictet-Spengler reaction of D-tryptophan methyl ester hydrochloride II-42 with piperonal II-34 in various solvents was extensively studied. The best stereoselectivity (cis/trans=99:1) was obtained using nitromethane or acetonitrile as the solvent.

我们研究了在不同溶剂中，D-色氨酸甲酯盐酸盐II-42和胡椒醛II-34发生的Pictet-Spengler反应的立体选择性，发现当分别用硝基甲烷和乙腈做溶剂时反应的立体选择性达到最高， cis：trans的比例为99： 1。

Leaching of Scandium From Scandium Concentrate by HCl and 7~# reagent

其盐酸盐为白色结晶性粉末，熔点223～226℃。

N-(1-Naphthyl)ethylenediamine dihydrochloride solution was injected into the mixed flow of the water sample and sulfanilamide solution. Red dye formed by the reactions was spectrophotometrically detected at lλmax 540 nm.

将N-(1-萘基)乙二胺二盐酸盐溶液注入到水样和对氨基苯磺酰胺溶液的混合流，在lλmax 540nm处对反应形成的红色染料进行分光光度检测。

N-1-Naphthylethylenediamine dihydrochloride solution was injected into the mixed flow of the water sample and sulfanilamide solution. Red dye formed by the reactions was spectrophotometrically detected at lλmax 540 nm.

将N-1-萘基乙二胺二盐酸盐溶液注入到水样和对氨基苯磺酰胺溶液的混合流，在lλmax 540nm处对反应形成的红色染料进行分光光度检测。

In the process of laboratory study, oxycodone was prepared by oxidating thebaine at 6,14-position under oxydol, hydrodeoxidizing 7,8-position double bond and 14-position ether under palladium catalyst. Furthermore, N-methyl of oxycodone was isolated byα-chloro-ethyl chloroformate under anhydrous condition and protection of 14-position hydroxyl to obtain noroxycodone, which was further converted into methylnaltrexone by N-alkylation in presence of cyclopropyl bromomethane, then by isolating 3-position methyl of methylnaltrexone under boron tribromide, becoming hydrochloride to prepare target compound, natrexone hydrochloride.

实验室工艺方面，本文首先用双氧水氧化蒂巴因的6-位和14-位、在钯炭催化下加氢还原7-8位双键和14-位醚合成羟考酮，然后提出并优化了在无水和14-位保护的情况下，用氯甲酸-α-氯乙酯脱去羟考酮的N-位甲基合成去甲羟考酮，再用环丙甲基溴将去甲羟考酮的N-位烷基化合成甲基纳曲酮，最后采用三溴化硼脱去甲基纳曲酮的3-位甲基和成盐酸盐合成盐酸纳曲酮。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。