Chemistry is traditionally divided into organic and inorganic chemistry. Quality Control of Pd2(DBA)3, 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
The subject matter herein is directed to carbazole-containing sulfonamide derivatives and pharmaceutically acceptable salts or hydrates thereof of structural formula I wherein the variable R1, R2, R3, R4, R5, R6, R7, A, B, C, D, E, F, G, H, a, and b are accordingly described. Also provided are pharmaceutical compositions comprising the compounds of formula I to treat a Cry-mediated disease or disorder, such as diabetes, obesity, metabolic syndrome, Cushing’s syndrome, and glaucoma.
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Reference：
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method