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Polystyrene sulfonate is usually supplied in either the sodium or calcium form. It is used as a potassium binder in acute and chronic kidney disease for people with hyperkalemia (an abnormally high blood serum potassium level). [3]
Sodium zirconium cyclosilicate, sold under the brand name Lokelma, is a medication used to treat high blood potassium. [5] Onset of effects occurs in one to six hours. [5] It is taken by mouth. [5] Common side effects include swelling and low blood potassium. [5] Use is likely safe in pregnancy and breastfeeding. [5]
Cascade reactions are often key steps in the efficient total synthesis of complex natural products. The key step in Heathcock's synthesis of dihydroprotodaphniphylline features a highly efficient cascade involving two aldehyde/amine condensations, a Prins-like cyclization, and a 1,5-hydride transfer to afford a pentacyclic structure from an acyclic starting material.
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Chelation (/ k iː ˈ l eɪ ʃ ən /) is a type of bonding of ions and their molecules to metal ions. It involves the formation or presence of two or more separate coordinate bonds between a polydentate (multiple bonded) ligand and a single central metal atom.
In their paper, they give many more examples of colloid systems that flocculate into an emulsoid state, either by varying the temperature, by adding salts, co-solvents or by mixing together two oppositely charged polymer colloids, and illustrate their observations with the first microscope pictures of coacervate droplets.
Minerals bond grains of sediment together by growing around them. This process is called cementation and is a part of the rock cycle. Cementation involves ions carried in groundwater chemically precipitating to form new crystalline material between sedimentary grains. The new pore-filling minerals form "bridges" between original sediment grains ...
The related resorcinarenes and pyrogallolarenes are produced from resorcinol and pyrogallol, respectively. The aldehyde most often used is formaldehyde , while larger aldehydes, like acetaldehyde , are usually required in condensation reactions with resorcinol and pyrogallol to facilitate formation of the C 4v symmetric vase conformation.