Promagnon 25 is a methylated prohormone that is structurally similar to Halodrol (H102350). However due to the lack of the double bond between C1-2, which makes Promagnon 25 a closer structural relati
ve of testosterone (T155000) and methyl testosterone (M326400). Promagnon 25 becomes Methylated Clostebol through the interacting with 3-β-HSD enzyme during metabolism and due to the 4-chloro group, P
romagnon 25 is a poor substrate for the aromatase cytochrome P-450 enzyme and 5-alpha reductase enzyme.
