Androgens
Norboletone
Also spelled norbolethone, a historical steroid identified in an athlete’s samples through direct reference-standard comparison.
Primary analytical identification in human samples; evidence checked 2026-10-01
Also known as: Norbolethone
Practical use
Evidence interpretation and concrete review questions
- Search both spellings
- Older literature may use norbolethone.
- Check the identification method
- A reference standard is different from an unconfirmed product claim.
- Keep dates visible
- A 2002 market observation cannot settle present-day status.
Overview
Norboletone is a distinct 19-nor steroid. A 2002 analytical report traced it to a reference chemical and noted earlier experimental human use, but did not provide a modern clinical efficacy or safety assessment.
Risks and limitations
The analytical report cannot establish harm frequency or benefit. Its authors’ historical observation that the compound was not commercially marketed is not a current global regulatory-status check.
How to read this
Chemical confirmation can answer what was present while leaving dose, purpose, benefit and medical consequences unresolved.
Research explained
Reference-standard identification
Who was studied
Two urine samples from one athlete examined by chromatography and mass spectrometry.
What was found
Retention times and mass spectra matched norbolethone reference material; at least one likely metabolite was also present. Endogenous steroid concentrations were unusually low.
What it cannot establish
One person’s samples do not establish a treatment effect or prove the cause of every steroid-profile change.
Read the original studyA reference match is stronger than a guessed name
The identification used both chromatographic behavior and mass-spectral comparison.
Supporting sourceHistorical context needs a date
The report describes the situation in 2002; current approval or availability requires independent verification.
Supporting sourceClaims versus findings
Incorrect
Detection in an athlete proves a quantified performance benefit.
The paper measured chemical identity rather than athletic outcomes.
Check the evidenceCommon questions
Are norboletone and norbolethone separate compounds?
The alternate spellings refer to this same identity in the cited record and chemical registry.
SourceSources
Reference-standard identification
PubChem chemical identity; checked October 1, 2026
Sources checked 2026-10-01.
General education; not a personal treatment plan.