Amino Acids & Peptides
REACH
Undecylenoyl phenylalanine
CAS Number
175357-18-3
EC Number
446-800-7
Industries: Personal Care & Cosmetics
What is Undecylenoyl phenylalanine?
Undecylenoyl phenylalanine (CAS 175357-18-3), also marketed as Sepiwhite MSH, is a lipophilic amino acid derivative used in cosmetic formulations as a skin-brightening active.
Where is Undecylenoyl phenylalanine used?
- Pigmentation correction: interferes with melanin synthesis pathways
- Skin-lightening and dark spot correction creams: reduces uneven pigmentation without hydroquinone
- Facial serums, sunscreen formulations and anti-aging emulsions: tone-evening performance
- Formulators targeting hyperpigmentation from UV exposure or post-inflammatory sources use it alongside niacinamide or vitamin C.
Good to know: Positioned as a compliant alternative in regulated markets. Sepiwhite MSH and Sepiwhite MSH QD are distinct commercial grades differentiated by particle size and dispersibility.
Commercial specifications
- Grades differentiated by particle size and dispersibility
- Minimum order quantities and packaging formats align with cosmetic active ingredient supply standards
Other Names (Synonyms)
Sepiwhite msh|Sepiwhite msh QD|N-Undecenoyl-L-phenylalanine|L-Phenylalanine, N-(1-oxo-10-undecenyl)-|Sepiwhite|271P08C6OD|L-Phenylalanine, N-(1-oxo-10-undecen-1-yl)-|N-(1-Oxo-10-undecen-1-yl)-L-phenylalanine
What are the physical properties of Undecylenoyl phenylalanine?
Melting Point 109-112 °C
Boiling Point 540.0±50.0 °C(Predicted)
Density 1.047±0.06 g/cm3(Predicted)
Vapor Pressure 0-0Pa at 25-60℃
Log P -0.04-3.3 at pH2-7
How is Undecylenoyl phenylalanine classified and handled safely? Learn More
Warning
GHS07· Irritant GHS05· Corrosive
Hazard Statements
H315 Causes skin irritation
H318 Causes serious eye damage
H319 Causes serious eye irritation
H335 May cause respiratory irritation
Precautionary Statements
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.