5alpha-androst-1-ene-3,17-dione + AH2 => 5alpha-androstan-3,17-dione + A
5alpha-androst-1-ene-3,17-dione + ah2 => 5alpha-androstan-3,17-dione + a
5alpha-androst-1-ene-3,17-dione + AH2 => 5alpha-androstan-3,17-dione + A
5alpha-androst-1-ene-3,17-dione + ah2 => 5alpha-androstan-3,17-dione + a