Database/Uv Absorber/Drometrizole
100% petroleum · ISO 16128

Is Drometrizole natural?

No. Both aromatic rings come from benzene and toluene-derived intermediates (o-nitroaniline and p-cresol), so the whole molecule is petrochemical, like other UV chromophores.

INCI nameDrometrizole
CAS2440-22-4
FormulaC13H11N3O · 225.25 Da
FunctionUv Absorber
FeedstockMade by diazotising o-nitroaniline, coupling with p-cresol and…

How we scored it

C13H11N3O (225.25 Da): benzotriazole ring (o-nitroaniline-derived) joined to p-cresol; aromatic rings and nitrogen all petrochemical; 0 / 225.25 = 0.00.
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.

Where it comes from

Made by diazotising o-nitroaniline, coupling with p-cresol and reducing to the benzotriazole, all from petrochemical aromatics. No natural-origin route exists.

In plain English

A synthetic UV absorber, a benzotriazole phenol also sold as Tinuvin P, that soaks up ultraviolet light to protect the product itself from sunlight. It is made from petrochemical raw materials.

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Structure

2D structure of Drometrizole

2-(benzotriazol-2-yl)-4-methylphenol

PubChem CID 17113 ↗

References

  1. 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
  2. 2Drometrizole. PubChem CID 17113. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3DROMETRIZOLE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4DROMETRIZOLE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=DROMETRIZOLE