Amino phthalhydrazide was synthesized from phthalic anhydride by four steps of nitrationidehydration, hydrazinolysis and reduction reactions in this paper.
METHOD Sphingomyelin was prepared through the process of separating erythrocyte from blood,erythrocytolysis,dehydration,dry,et al,and then hydrolyzed to ceramide by phospholipase C.
Energy-saving ethanol dehydration techniques to produce dehydrated alcohol mainly included four measures as azeotropy distillation, extraction distillation, absorptive process and membrane separation.
The method of liquid phase synthesis of dioxane from the cyclodehydration of diethylene glycol catalyzed by ASP-type solid acidic catalysts was studied.
Method Treatment of 8,9 anhydroerythromycin 6,9 hemiketal with iodine in the alkaline solution provided corresponding N monodemethylated 12 membered ring erythromycin derivative.
Serum 1,5-anhydro-D-ghlcitol(1,5-AG),also known as 1,5 anhydro-sorbitol,,is a relatively new indicator in its diagnosis and therapeutic monitoring..It is first found in the human ncurolymph.
Calcium ammine catalyst was prepared with metal calcium,dehydrated liquid ammonia as raw materials,nano-silica as a carrier and acetonitrile and propylene epoxide as modifiers.
A kind of monosubstituted squaric amide ——mono carbamoyl amide of squaric acid 3(MCASAQ) was prepared by the condensation of squaric acid (SQ) with urea or its derivatives in water.
This study indicated that the early death of chichens with IBD is related to the microthrombosis in vital organs and the late death is mainly induced by diarrhoea-dehydration-hypovolemic shock.