左旋

The high laevorotation of L-cystine depends on a specially helical structure of its molecular.

指出了L-胱氨酸高度的左其分子的特殊螺结构决定的。

Levocetirizine Dihydrochloride was prepared from benzoyl chloride by acidylation,hydrogenation,cyclization with an overall yield of 8.05%.

以苯甲酰氯为原料,经酰化,还原,环合等反合成左西替利嗪盐酸盐,反总收率为8.05%。

As single laevo-enantiomers,ropivacaine and levobupivacaine which have been generally researched are attracting extensive attention for their better anaesthetic effect and less system toxicity.

近年研究较多的罗哌卡因和左布比卡因作为单一的左对映异构体,因其良好的局麻效和较小的全身毒正引起广泛的关注。

The electrode showed wide linear response range, low detection limit, satisfactory average recovery for Berenil Xyalzole, Levamisole and Berberine.The electrode gives good other characteristic.

电极对兽药血虫净、静松灵、左咪唑、黄连素等的范围宽，检测下限低，各项能良好，回收率测定结果满意。