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Moreover, we own DSC controlled manufacturing plants and its automatic level can reach the first-class level of world. At present, we have established long-term and strategic cooperative relationships with several research institutes and multinational companies, and obtained a number of technical achievements. By now, we have more than 60 patents for utility model and two patents for invention. Moreover, we are applied to be a national key-supported hi-tech enterprise of China.

Synthesis of New Chiral 2,2-Bipyridyl-Type Ligands

Synthesis of New Chiral 2,2-Bipyridyl-Type Ligands, Their Coordination to Molybdenum(0), Copper(II), and Palladium(II), and Application in Asymmetric Allylic Substitution, Allylic Oxidation, and Cyclopropanation

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Chemical reagent expiration date

Chemical reagents are affected by external factors such as temperature, light irradiation, air and moisture during storage, transportation and sales, and are prone to physical chemistry such as deliquescence,mycin, discoloration, polymerization, oxidation, volatilization, sublimation and decomposition. Change, make it invalid and unusable.

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Chemical reagent qualitative judgment principle

Inorganic compounds can be used for a long time as long as they are properly stored and packaged intact. However, those substances that are easily oxidized and deliquescent can be stored in a short period of time (1 to 5 years) in the dark, shade, and dry conditions, depending on whether the packaging and storage conditions are in compliance.

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the bidentate ligands 2,2-bipyridine (bpy) and 1,10-phenanthroline (phen)

parallels between the coordination chemistries of the bidentate ligands 2,2-bipyridine (bpy) and 1,10-phenanthroline (phen)

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