Superiority:
1,we produce and sell good chemicals around the world.
2,our success rate is about 95%. this means, if customer order is accepted, the probability that the customer will obtain the ordered substances, is 95%.
3,our staff consists of highly qualified individuals with bsc, msc and ph.d degrees in chemistry, as well as excellent carbohydrates,nucleosides, small molecules and rare chemicals.
4,imaginechem's chemists are skilled at performing complex, multi-step syntheses and solving difficult chemistry-related problems. because of our better, concentracted size and low overheads, we are able to offer prompt quotations, very competitive prices, high quality products and fast delivery.
5,all chemicals are typically >97% for building blocks, the structure and purity is confirmed by nmr and lc-ms. intermediates and final products are analyzed by gc, hplc, ir, nmr, ms, elemental analysis, atom-absorpting analysis and crystallographical methods.
545,customers-oriented strategy, exclusive supply chain management, professional r&d team, experienced production workers, energetic sales team enable us to offer best service andgood-value products to all of our customers and gradually reach our final goals: becoming global leading supplier for portable products and solutions.
Details:
Progesterone is made up of ovarian corpus luteum cells secrete a contains 21 carbon atoms of steroid hormone, as all synthetic steroid hormone intermediate, belong to one of progesterone. There are two kinds of crystal type, alpha and beta, two kinds of crystal type have the same physiological activity, alpha type from dilute ethanol precipitation, for orthogonal series, white prismatic crystal, beta type of orthogonal series, white needle crystal, both are insoluble in water, soluble in ethanol, ethyl ether, chloroform, acetone, dioxane and concentrated sulfuric acid.
Progesterone is secreted by the ovary, placenta and adrenal cortex. The main physiological function to make after the effect of estrogen has to develop in a state of hyperplasia of endometrium and hyperplasia, thickening, hypertrophy, soft, and secrete mucus, ready for implantation of a fertilized egg favorable conditions. After implantation, the survival and development of early directly in high progesterone secretion control under the influence. Therefore, progesterone is extremely important hormones in the female reproductive system, and steroid hormones the important intermediate of biosynthetic pathway. All steroid hormone secreted glands, synthetic progesterone, but as the main hormone and exocrine to glands, is limited to the ovaries and the placenta. Ovarian progesterone, is in the luteal phase after ovulation, corpus luteum cells, secretion of tissue is particles so progesterone is also called progesterone. Corpus luteum atrophy, progesterone secretion is also low. In a normal pregnancy women after 8 ~ 9 weeks, the placenta is become the main organs of progesterone secretion, but also can still continue to ovary secretion, until the end of pregnancy.
Progesterone main physiological functions:
1, maintain a female's pregnancy, and lead to pregnancy animals appear a series of physiological changes, such as inhibiting female estrus.
2, promote the uterus mucosal layer thickening, bending and gland secretion function.
3, peristalsis of the uterus and the cervical contraction, secretion of viscous liquid, etc. The physiological changes to the operation of the early embryo, growth and development, with plant and with fetal growth after planting provide suitable environmental conditions.
4, a small amount of progesterone and estrogen synergy and promote female estrus. Progestational hormone and prolactin synergy, can promote the development of mammary gland.
5, progesterone in the hypothalamus and pituitary feedback adjustment, coordination and balance make animal reproductive hormone secretion. Follicular phase content in the body, a variety of livestock progesterone levels below 1 ng/ml, cattle in the luteal phase about 4 nanograms per milliliter, pregnancy about 18 nanograms per milliliter.