Polylysine

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Polylysine is a widely used ingredient in cosmetics, personal care, and skincare formulations. Depending on its function, it may serve as a moisturizer, preservative, emulsifier, or active ingredient to enhance the overall effectiveness and performance of a product.

Polylysine (Wikipedia)

Polylysine refers to several types of lysine homopolymers, which may differ from each other in terms of stereochemistry (D/L; the L form is natural and usually assumed) and link position (α/ε). Of these types, only ε-poly-L-lysine is produced naturally.

ε-Polylysine
Skeletal formula of ε-polylysine
Skeletal formula of ε-polylysine
Names
IUPAC name
Poly[imino[(2S)-2-amino-1-oxo-1,6-hexanediyl
Identifiers
ChemSpider
  • none
UNII
Properties
(C6H12N2O)n
Molar mass variable
4700 g/mol (degree of polymerization = 30)
Melting point 142.2 °C (288.0 °F; 415.3 K)
Soluble
Basicity (pKb) 5
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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