So, this is super interesting.
You say it's the "primary metabolite", do we know if this conversion is large enough to create noticeable effects (dose dependent, of course).
The reason I ask is that having experimented extensively with DHB and followed results with both myself, clients, elsewhere, DHB (compared to say, Primo) seems to have effects that intuitively seem decidedly androgenic in nature. I can give specifics if curious.
Structurally, and what I've studied of DHB directly, it's been hard to rationalize chemically. I now wonder if many of the unique effects DHB seems to produce are really a product of DHT conversion. It would make a *lot* of sense, IMO.