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A SIMPLE AND CONVENIENT ROUTE FOR PREPARATION OF OPTICALLY ACTIVE BICYCLOLACTONES
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作者 Hui Jun WU Qi WEI Hai Jian SHI Liang CHEN Shou Yuan LIN Department of Chemistry,East China Normal University,Shanghai 200062 《Chinese Chemical Letters》 SCIE CAS CSCD 1993年第6期493-494,共2页
Optically active bicyclolactones 4 were prepared via a new simple route.
关键词 IR CM CCI A SIMPLE AND CONVENIENT route FOR preparation OF OPTICALLY ACTIVE BICYCLOLACTONES
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Preparation and stability study of lansoprazole for injection
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作者 Zhenyu Lu Rong Xu +2 位作者 Wei Dai Jing Lin Chen Shen 《Journal of Chinese Pharmaceutical Sciences》 CAS CSCD 2018年第6期442-450,共9页
In the present study, we aimed to assess the preparation method of sterile lansoprazole powder for injection, as well as its quality and stability. By cryodesiccation technology in combination with the control of its ... In the present study, we aimed to assess the preparation method of sterile lansoprazole powder for injection, as well as its quality and stability. By cryodesiccation technology in combination with the control of its quality and stability, the optimal formulation and preparation route were screened. Through small-scale and pilot-scale production validation, the formulation and preparation route were confirmed, in which mannitol was used as skeletal matter, meglumine was used as solubilizer and p H stabilizer, and sodium hydroxide was used as p H regulator. The formulation and preparation route were reasonable, showing good quality control and stability and fitting the pharmaceutical and clinical need. 展开更多
关键词 LANSOPRAZOLE FREEZE-DRYING preparation route Stability study
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New bubble-exfoliation route to prepare high-quality graphene with high yield
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《Science Foundation in China》 CAS 2017年第4期11-,共1页
With the support by the National Natural Science Foundation of China and the Ministry of Science and Technology of China,the research team led by Prof.Ding Guqiao(丁古巧)and Dr.He Peng(何朋)at Shanghai Institute of Mi... With the support by the National Natural Science Foundation of China and the Ministry of Science and Technology of China,the research team led by Prof.Ding Guqiao(丁古巧)and Dr.He Peng(何朋)at Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,achieved 展开更多
关键词 New bubble-exfoliation route to prepare high-quality graphene with high yield
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A new route to prepare the mixed oxo-ethylidynecapped trinuclear tungsten(Ⅳ)cluster and the crystal structure of H_2Na_3[W_3O(CCH_3)(O_2CCH_3)_6(H_2O)_3][H_2W_(12)O_(40)]·13.5H_2O
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作者 YU,Xiu-Fen XU,Li Department of Chemitsry,Fuzhou University,Fuzhou,Fujian 350002 《Chinese Journal of Chemistry》 SCIE CAS CSCD 1992年第2期130-137,共0页
The synthesis and the structural characterization of the title compound HNa[WO(CCH)-(OCCH)(HO)][HWO]·13.5 HO are described.It is known that the mixed oxo-ethylidyne-capped tritungsten cluster can be obtaine... The synthesis and the structural characterization of the title compound HNa[WO(CCH)-(OCCH)(HO)][HWO]·13.5 HO are described.It is known that the mixed oxo-ethylidyne-capped tritungsten cluster can be obtained by Zn dust reduction of NaWO·2HO in acetic anhydride.The title compound has been characterized by X-ray diffraction,UV/VIS andH NMR spectra.The tungsten atoms in the cluster cation and anion are in the oxidation states of W(IV)and W(VI)respectively.The crystal is rhombohedral with the space group R32,a=17.058(3),c=49.665(9),γ=120°,V=12516(9),Z=6,final R=0.037 for 2071 reflections with I≥3σ(I).Boththe cluster cation and anion have a Csymmetry.The important interatomic distances in angstroms forthe cluster cation are:W—W,2.730(2);W—μ-O,2.00;W—O(carboxyl),2.12;W—O,2.18(2). 展开更多
关键词 A new route to prepare the mixed oxo-ethylidynecapped trinuclear tungsten H2O H2W O2CCH3 cluster and the crystal structure of H2Na3[W3O CCH3 Na
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