I know you can get estrogen from horse urine as a feedstock, but there are other methods used today, right? Do they use other animal products? Petroleum? I'm just looking for a basic overview and don't know where else to look.
I know you can get estrogen from horse urine as a feedstock, but there are other methods used today, right? Do they use other animal products? Petroleum? I'm just looking for a basic overview and don't know where else to look.
Yams!!
And I imagine the cholesterol also comes from animal sources? Or is it from yeast? 4% sounds low, but then again you gotta grow an entire pig/horse to get it otherwise.
Karl Djerrasi, who first synthesized oral contraceptives, set up shop in Mexico City because it was close to a good source of wild yams.