ortho

ortho- dibromobenzene.

ortho- dibromobenzene

Abstract The synthesis of “highortho”novolak resin has been presented in this paper.

本文介绍了高邻位热塑性酚醛树脂的合试验。

Methods To detect the sed occult blood of 200 specimens with both ortho-tolidine method and immunogold method.then analyse the results.

方法邻联甲苯胺和便隐血胶体金检测试纸别检测200例粪标本进行对照实验并。

Using ortho-bis(porpargyl alcohol) derivatives as starting materials, we employed sulfenyl or sulfinyl chloride under base condition to generate bis-allene intermediates.

所采的合方式以邻位二丙炔醇为起物，在碱性环境中与次磺氯或亚磺氯作丙二烯后，再经环化反应得多并苯化合物。

This method not only lowcrs the temperature of labelling ortho-iodo-hippuric acid, speeds up the reaction and gives high yield, but aslo suits the requirement of large scale production.

早期,邻-碘马尿酸的标记大多采水溶液体系,热熔融体系,热液熔融体系的交换法来制备。

In the related "amide route" starting from 2-chloroisonicotinic acid, 41 ,a secondary amide directing group was used to facilitate the ortho lithiation of the pyridine 3-position.

在有关"酰胺三号"由2-氯酸、41、次要酰胺导演组的锂方便邻吡啶3-立场.

The isomers dostribution of ortho-and para-toluenesulfonamide are successfully determined by high performance liquidchromatography (HPLC) . The results are compared with ultraviolet-spectroscopy (UV).

本文采高效液相色谱法(HPLC),功地测定了邻、对甲苯磺酰胺的异构体布,并紫外光谱法(UV)作为对照的方法进行比较。