Pyridinium chlorochromate CAS 26299-14-9 is compared with other commonly used chromium-containing oxidants such as jons reagent, Colljn reagent, etc. It has strong oxidizing ability, good selectivity, and the olefinic bond of the substrate molecule Chemicalbook is not affected during the oxidation process. , and easy to operate. In addition, the acidity of PCC is weaker, so those groups that are not stable to acid can still be preserved during oxidation.