Description

Stearoyl Leucine is a high-purity, synthetic amino acid derivative where stearic acid is covalently linked to the amino acid L-leucine. This compound matters as a versatile, multifunctional ingredient prized for its excellent emulsifying, conditioning, and surface-modifying properties. It is primarily needed by manufacturers in the personal care, cosmetic, and pharmaceutical industries seeking to enhance product texture, stability, and skin feel.

Application

• Cosmetic & Personal Care Formulations: Acts as a high-efficiency co-emulsifier, opacifier, and viscosity modifier in creams, lotions, and sunscreens.
• Skin Care Products: Provides a smooth, non-greasy after-feel and enhances the spreadability of active ingredients in serums and moisturizers.
• Hair Care Products: Used as a conditioning agent in shampoos and conditioners to improve hair manageability and impart gloss.
• Makeup Products: Functions as a texture enhancer and binder in foundations, lipsticks, and pressed powders for improved application.
• Pharmaceutical Topicals: Serves as an excipient in ointments and gels to modify drug release and improve skin adhesion.
• Industrial Applications: Employed as a lubricant and processing aid in polymer and specialty chemical manufacturing.

Basic Information

Product Name	Stearoyl Leucine
CAS No.	14379-43-2
Molecular Formula	C24H47NO3
Molecular Weight	397.64 g/mol
Synonyms	N-Stearoyl-L-leucine; L-Leucine, N-(1-oxooctadecyl)-; N-Octadecanoyl-L-leucine; Leucine Stearamide; Stearic Acid Leucinamide; N-(1-Oxooctadecyl)-L-leucine; Leucine, N-stearoyl-; (2S)-2-[(1-Oxooctadecyl)amino]-4-methylpentanoic Acid
EINECS	238-357-5

Quality Control

Our Stearoyl Leucine is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets stringent specifications for cosmetic and pharmaceutical-grade applications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from strong oxidizing agents and excessive heat.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Melting Point	95 - 105 °C
Loss on Drying	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents	Meets ICH guidelines

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.