Tetrahydrogestrinone THG

A steroid created specifically to dodge drug tests, central to a major sports doping scandal in the early 2000s. There's essentially no legitimate human research on it — what's known comes from doping investigations rather than actual clinical study.

Also known as The Clear, 643MR6L9LB, RefChem:188677, 111-759-3, Tetrahydrogestrinone (>90%), Tetrahydrogestrinone 90%, Tetrahydrogestrinone (THG), BIDD:ER0580

Effects Build muscle

Routes Oral

Legal status Unapproved / investigational

WADA Banned at all times

3D Molecular Structure of C₂₁H₂₈O₂

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Chemistry

Formula: C21H28O2
Molar mass: 312.4
CAS: 618903-56-3
PubChem CID: 6857686
IUPAC name: (8S,13S,14S,17S)-13,17-diethyl-17-hydroxy-1,2,6,7,8,14,15,16-octahydrocyclopenta[a]phenanthren-3-one
InChIKey: OXHNQTSIKGHVBH-ANULTFPQSA-N

Reported dosing

Limited data

What has been reported in the literature and by users. This is a record of what is done, not a recommendation.

Typical dose Not established (banned, no legitimate human use)

Reported range Historical BALCO-scandal reports: sublingual drops, exact doses undisclosed

Route Sublingual

Frequency Not established

Duration Not established

The 'designer steroid' at the center of the 2003 BALCO doping scandal, created specifically to evade drug testing; a Schedule III controlled substance with no legitimate current source and essentially no legitimate human research.

Where this comes from Historical anti-doping/case investigation literature

Human data for this compound is limited. Read the figures above as a record of reported use rather than established dosing.