Cyclen (cas 294-90-6) is a macrocycle and the aza analogue of the crown ether 12-crown-4. Derivatives of cyclen are larger cyclic polyamines but the repeating unit (ethyleneimine) is always the same. Like crown ethers, cyclen compounds are capable of selectively binding cations. They are used as a ligand in chemistry for instance with chemicals used in MRI contrast agents.
Viwit Pharmaceuticals Limited (Viwit), founded in 2006, is a fast-growing research-based pharmaceutical healthcare company dedicated to the development, manufacture and marketing of innovative products in the fields of Finished Dosage Formulations, Active Pharmaceutical Ingredients and Fine Chemicals. Viwit manufactures all the products based on company’s core technologies, and is dedicated to serve customers for their greater success and healthier living.
Viwit consists of six subsidiaries, in...
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Basic Information
Business Type: Manufacturer
Product/Service (We Buy): 101 - 500 People
Year Established: 2006
Number of Employees: 101 - 500 People
Trade & Market
Main Markets: North America,Mid East,Western Europe
China
