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, 环合等反应合成左旋西替利嗪盐酸盐,反应总收率为8.05%.
每次返回，我都会惊讶于澳大利亚及其国民的与众不同。Each time I returned I was struck by the uniqueness of Australia and its people.你认为选民们会相信总统对国民的炉边演说 吗 ?Do you think the voters will be convinced by the President's fireside address to the na...
它对红光,红外线的光以外的其它光相对来说是不敏感的.It is relative insensitivity to other than red and infrared lights.大多数实验动物对肠毒素极不敏感.Most laboratory animals are quite insensitive to enterotoxin.充分发育的血管对氧中毒是不敏感的.Fully developed blood vessels are...
花丝:1.被子植物中,雄蕊支撑花药的柄.Filament 1 . The stalk of the stamen bearing the anther in angiosperms.花丝在雄蕊里产生花药的柄.The stalk that bears the anther in a stamen....