184851-16-9Relevant articles and documents
A calcitriol synthesis of intermediates method
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, (2019/06/13)
The invention discloses a calcitriol intermediate compound preparation method, which belongs to the drug synthesis and organic compound synthesis technology field. The invention wide sources of raw materials are easy, simple and safe operation, environmen
Enantiomeric impurity PY2 of tacalcitol and preparation method and application thereof
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Paragraph 0026; 0027; 0034, (2018/05/30)
The invention discloses an enantiomeric impurity PY2 of tacalcitol, i.e., (1 alpha, 3 beta, 5Z, 7E, 24S)-9,10-Secocholesta-5,7,10(19)-triene-1,3,24-triol, and a preparation method thereof, and belongsto the technical field of chemical pharmaceutical. The high-purity relevant impurity PY2 of the tacalcitol, which is disclosed by the invention, can be used as an impurity standard substance in the tacalcitol finished product detection analysis so as to promote accurate positioning and nature determination of the tacalcitol finished product detection analysis on the impurity and benefit reinforcement of control on the impurity, thereby improving quality of a tacalcitol finished product. The method provided by the invention has the advantages that the raw materials are cheap and easy to obtain, the operation is simple, the reproducibility is good in and the HPLC (High Performance Liquid Chromatography) purity is greater than or equal to 99.5%.
Development of an improved process for doxercalciferol via a continuous photochemical reaction
Anderson, Bruce G.,Bauta, William E.,Cantrell, William R.
, p. 967 - 975 (2012/08/27)
Doxercalciferol (1α-hydroxyvitamin D2) is a commercially approved vitamin D derivative used to treat chronic kidney disease (CKD) patients whose kidneys cannot metabolically introduce a hydroxyl group at C1. A new process for the production of doxercalcif