In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 1679-47-6, name is 3-Methyldihydrofuran-2(3H)-one, introducing its new discovery. Safety of 3-Methyldihydrofuran-2(3H)-one
A major metabolite of vitamin D3 was recently isolated and identified as 25-hydroxyvitamin D3-26,23-lactone.To determine the configurations at C-23 and C-25 positions, the four stereoisomers were synthesized by stereoselective lactonization method.The two 23R-isomers were obtained by iodolactonization of 22,23-trans-26-acid, and the two 23S-isomers were synthesized by selenolactonization of 22,23-cis-26-acid.The four synthetic isomers and the naturally produced lactone were co-chromatographed on a high performance liquid chromatographic system capable of separating the four isomers.The natural lactone comigrated with synthetic (23S,25R)-isomer determining its structure as (23S,25R)-25-hydroxyvitamin D3-26,23-lactone.
We’ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, the role of 1679-47-6, and how the biochemistry of the body works.Safety of 3-Methyldihydrofuran-2(3H)-one
Reference：
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem