NATURAL SYNTHETIC CLAYS USED

Brand Owner Address Description
DAC Delta Chemicals, Inc. Searsport ME 04974 natural and synthetic clays used for water treatment and paper industry and waste treatment applications;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. The present invention concerns a new general process for asymmetric hemisynthesis of harringtonines and their analogs, that are alkaloids used in chemotherapy. This process comprises direct esterification of a natural cephalotaxine with an acylating compound constituted of a side chain precursor which backbone and functionalization are entirely preformed. The invention also concerns a natural, synthetic or semi-synthetic harringtonines including their tautomeric forms and their salts of the following formula: