HCG 人绒毛膜促性腺激素

SynonymsChorionic gonadotropin, hCG, CG.IntroductionHuman chorionic gonadotropin （hCG） is a peptide hormone produced in pregnancy, that is made by the embryosoon after conception ａnd later by the syncytiotrophoblast（part of the placenta）. Its role is to prevent the disintegration of the corpus luteumof the ovaryand thereby maintain progesterone production that is critical for a pregnancy in humans. hCG may have additional functions, for instance it is thought that it affects the immune tolerance of the pregnancy. Early pregnancy testing generally is based on the detection or measurement of hCG.DescriptionHuman Chorionic Gonadotropin is produced from a sterile preparation of placental glucoprotein urine of pregnant women having a total molecular mass of 36,700 Dalton. The hCG consists of 237 amino acids, a chain-92 amino acids ａnd b chain-145 amino acids. The hCG is purified by proprietary chromatographic techniques.SourceUrine of pregnant women.Physical AppearanceSterile Filtered White lyophilized （freeze-dried） powder.FormulationThe hCG was lyophilized with no additives.SolubilityIt is recommended to reconstitute the lyophilized Human Chorionic Gonadotropin in sterile 18MΩ-cm H2O not less than 100 μg/ml, which can then be further diluted to other aqueous solutions.StabilityLyophilized hCG although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution CG-beta should be stored at 4°C between 2⁻⁷ days ａnd for future use below -18°C. For long term storage it is recommended to add a carrier protein （0.1% HSA or BSA）.
Please prevent freeze-thaw cycles.PurityPurity is 98%.Biological ActivityThe activity was found to be 6767IU/mg.了解详情，登录：http://www.bioconsumable.com/cn/br/Cytokines%20and%20proteins/03/P139079.htm​