4-Androstenedione can be synthesized in one of two ways. The primary pathway involves conversion of 17-hydroxypregnenolone to dehydroepiandrosterone by way of 17,20-lyase, with subsequent conversion of dehydroepiandrosterone to 4-Androstenedione via the enzyme 3-β-hydroxysteroid dehydrogenase. The secondary pathway involves conversion of 17-hydroxyprogesterone, most often a precursor to cortisol, to 4-androstenediones directly by way of 17,20-lyase. Thus, 17,20-lyase is required for the synthesis of 4-androstenediones, whether immediately or one step removed.
The production of adrenal 4-Androstenedione is governed by ACTH, whereas production of gonadal 4-Androstenedione is under control by gonadotropins. In premenopausal women, the adrenal glands and ovaries each produce about half of the total 4-androstenedione(about 3 mg/day). After menopause, 4-androstenedione production is about halved, due primarily to the reduction of the steroid secreted by the ovary. Nevertheless, 4-androstenedione is the principal steroid produced by the postmenopausal
1. Best prices with satisfied quality.
2. Rich experienced in delivering the parcels to you.
3. Enough stock ensure the prompt delivery time .
4. Good after-sales service.
5. Package will be reshipped if sent failed .
6. Specials are possible when the order is big enough.
Packaging & Delivery Process:
1: Sufficient stock, so we can delivery promptly at the very day when receive the payment
2: Sophisticated and professional logistic agent. We take responsibility to provide our customers with fast delivery and secure shipping.
3:Well-trained and disciplined packing team. Unique ways to ship 10 grams to 100kg powders at one time to your destination. Fast and discreet shipment could be arranged for customs pass Guaranteed.
4: Our company promise to deliver clients' package to his hands safely, or we'll cover the total loss and reship in time.
5: After-sale service: Any questions or problems after receiving the product, please feel free to contact us. Problems would be solved immediately.
© 2017 - 2020 China Bmdp All Rights Reserved