Undecylenoyl Phenylalanine

AKA: 175357-18-3, Sepiwhite msh, Undecylenoylphenylalanine, Sepiwhite msh QD, N-Undecenoyl-L-phenylalanine, L-Phenylalanine, Sepiwhite
Synthetic
Skin Conditioner
Clean
OriginSynthesized from the amino acid phenylalanine and undecylenic acid through chemical coupling reactions. Produced via peptide bond formation between phenylalanine and undecylenic acid derivatives under controlled synthesis conditions.
L-Phenylalanine, N-(1-Oxo-10-Undecenyl)-
Formula
C20H29NO3
Mol. Weight
331.40
CAS #
175357-18-3
Form
Powder
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Locks in moisture
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR
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