Chemistry is traditionally divided into organic and inorganic chemistry. HPLC of Formula: C51H42O3Pd2, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 52409-22-0
Preparation of 1,5-Dihydropyrazolo[3?,4?:5,6]pyrano[3,4- b]pyridines via a Microwave-Assisted, Palladium-Catalyzed Regioselective C-H Heteroarylation of Electron-Rich Pyrazoles
Here we report the first synthesis of a family of novel heterocyclic compounds based on a 5-dihydropyrazolo[3?,4?:5,6]pyrano[3,4-b]pyridine core. In the course of our drug discovery programs, we had need to access the previously unknown 5-dihydropyrazolo[3?,4?:5,6]pyrano[3,4-b]pyridine core. Initial attempts required long reaction times, which led to degradation and side products. Reaction optimization identified a Pd-catalyzed, microwave-assisted C-H heteroarylation protocol for the rapid, general, and high yielding synthesis of this tricyclic core (as well as related analogs) suitable to drive optimization efforts.
If you are interested in 52409-22-0, you can contact me at any time and look forward to more communication. HPLC of Formula: C51H42O3Pd2
Reference：
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method