An impurities of Progesterone.Progesterone is an endogenous steroid and progestogen sex hormone involved in the menstrual cycle, pregnancy, and embryogenesis of humans and other species. Progesterone is also a crucial metabolic intermediate in the production of other endogenous steroids, including the sex hormones and the corticosteroids, and plays an important role in brain function as […]

(20R)-ginsenoside Rg3 is a ginsenoside found in Panax japonicus var. major that is dammarane which is substituted by hydroxy groups at the 3beta, 12beta and 20 pro-R positions, in which the hydroxy group at position 3 has been converted to the corresponding beta-D-glucopyranosyl-beta-D-glucopyranoside, and in which a double bond has been introduced at the 24-25 […]

(20S)-paricalcitol is an isomer of paricalcitol, an analogue of vitamin D2. Paricalcitol is a medication used for the treatment of secondary hyperparathyroidism.