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noretynodrel, northynodrel (USAN)

CAS 68-23-5
5

Safety score · 0–100

Avoid

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

About

Noretynodrel, Northynodrel (usan) is a cosmetic ingredient used in product formulations. Exercise caution due to limited available safety data.

Noretynodrel (CAS 68-23-5) is a synthetic 19-norsteroid progestogen structurally related to norethisterone, historically used in early oral contraceptives. Its EU regulatory record shows GHS hazard classifications H350 (suspected carcinogen) and H360 (may damage fertility or the unborn child), which automatically disqualify it from cosmetic use under EU Regulation 1223/2009. The substance is explicitly banned in Annex II with no permissible cosmetic use under any circumstance.

Known concerns

  • EU Annex II banned — H350/H360 classified (carcinogen/reproductive toxicity)
  • CMR substance — categorically excluded from cosmetic use
  • Severe reproductive and developmental toxicity concern

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 — always read the physical product label and consult a healthcare professional for personal concerns.