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norethandrolone

CAS 52-78-8
5

Safety score · 0–100

Avoid

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

Norethandrolone is a cosmetic ingredient used in product formulations. Exercise caution due to limited available safety data.

Norethandrolone (CAS 52-78-8) is a 19-nor anabolic steroid (derivative of testosterone with a carbon removed from the A-ring) with both anabolic and androgenic activity, previously investigated as a pharmaceutical agent. EU Annex II of Regulation 1223/2009 bans this substance as a hormonal anabolic steroid with no permissible cosmetic use. Its endocrine-disrupting potential is the primary regulatory concern.

Known concerns

  • EU Annex II banned — anabolic steroid
  • Endocrine disruption potential
  • No cosmetic concentration threshold established as safe

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.