How we scored it
Phe-Trp-Tyr tripeptide, C29H30N4O5 (514.6 Da): three proteinogenic amino acids, no caps, so 1.0.
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
Dominant route couples fermentation-derived amino acids by solid- or solution-phase synthesis. No petrochemical amino-acid fragment is involved.
In plain English
A short chain of three amino acids (phenylalanine, tryptophan and tyrosine) added to skin products for conditioning. The amino acids are normally made by fermentation, then linked together in a laboratory.
CosIng definition: Tripeptide-41 is the synthetic peptide consisting of phenylalanine, tryptophan and tyrosine
Structure
(2S)-2-[[(2S)-2-[[(2S)-2-amino-3-phenylpropanoyl]amino]-3-(1H-indol-3-yl)propanoyl]amino]-3-(4-hydroxyphenyl)propanoic acid
References
- 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.
- 2Tripeptide-41. PubChem CID 44611954. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3TRIPEPTIDE-41. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4TRIPEPTIDE-41. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=TRIPEPTIDE-41