Description

n-Stearoyl-L-Cysteine is a high-purity, synthetic lipoamino acid derivative, combining the properties of stearic acid and the amino acid L-cysteine. This compound is valued for its role as a versatile building block and functional additive, offering unique surface-active and biochemical properties. It is primarily utilized by manufacturers in the pharmaceutical, cosmetic, and advanced material science industries for applications ranging from drug delivery systems to personal care formulations.

Application

• Pharmaceutical Intermediates: Serves as a key precursor in the synthesis of more complex active pharmaceutical ingredients (APIs) and prodrugs.
• Cosmetic & Personal Care: Used as a skin-conditioning agent, emulsifier, or stabilizer in creams, lotions, and haircare products due to its amphiphilic nature.
• Bioconjugation & Drug Delivery: Acts as a linker molecule for creating lipid-drug conjugates to enhance bioavailability and target specificity.
• Biochemical Research: Employed as a substrate or inhibitor in enzymatic studies and as a tool compound in lipid metabolism research.
• Surface Modification: Utilized for coating nanoparticles or modifying material surfaces to improve biocompatibility and dispersion.
• Hair Care Actives: Incorporated into formulations for its potential protective and conditioning effects on hair fibers.

Basic Information

Product Name	n-Stearoyl-L-Cysteine
CAS No.	67603-46-7
Molecular Formula	C₂₁H₄₁NO₃S
Molecular Weight	387.62 g/mol
Synonyms	L-Cysteine, N-stearoyl-; N-Stearoylcysteine; N-Octadecanoyl-L-cysteine; Stearic acid L-cysteine amide; (R)-2-(Octadecanamido)-3-sulfanylpropanoic acid; NSC 334364; Lipamino acid SC18
EINECS	Contact for details

Quality Control

Our n-Stearoyl-L-Cysteine is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, chiral purity verification, and identity confirmation to ensure it meets stringent specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 15-25°C. This product is hygroscopic (moisture-sensitive) and easily oxidized; for long-term storage, consider using an inert atmosphere (e.g., nitrogen or argon purge). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Chiral Purity (HPLC)	≥ 99.0% L-Isomer
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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