All prohormone's are some form of a designer steroid. Some are just methylated steroids, others require a conversion, to become a more potent androgen.
Halodrol and clones, are a pro-steroid to Oral Turinabol(which is a scheduled substance)
very minor if any conversion into tbol happens.
Promagnon and clones(except for Anteaus labs Mechabol which is already active) are prosteroid's to Methylclostebol(which is not a scheduled steroid, but clostebol is)
mechabol is methyl clostebol, what one would consider an active oral steroid.
pmag should also be able to bind with the ar, with hopes of it converting into methyl clostebol.
P Stanz before it was banned was a pro steroid to Stanozolol(winstrol)
pstanz contained an active steroid, basically non methylated winstrol, instead of a methyl group, it has a thp ether group.
Superdrol is a methylated version of masteron(drostanolone) which is orally active
Epistane is methylated Epitiostanol which is orally active
M-Sten products are Methyl Stenbolone already orally active