Description

3-o-Octadecyl-D-Ascorbic Acid is a lipophilic derivative of ascorbic acid (Vitamin C), where a long-chain octadecyl group is esterified at the 3-O position. This structural modification significantly enhances its lipid solubility and stability, making it a valuable ingredient for advanced formulations requiring antioxidant activity in non-aqueous systems. It is primarily sought by R&D and production teams in the cosmetics, nutraceutical, and specialty chemical industries for its unique combination of vitamin C's antioxidant benefits with improved skin penetration and formulation compatibility.

Application

• Cosmetic & Skincare Actives: A key lipid-soluble antioxidant in anti-aging serums, creams, and lotions to protect skin from oxidative stress and support collagen synthesis.
• Nutraceutical & Pharmaceutical Formulations: Used in lipid-based delivery systems (e.g., softgel capsules, nanoemulsions) to enhance the bioavailability and stability of ascorbic acid.
• Food & Beverage Fortification: Employed as a fat-soluble antioxidant in oil-rich food products, nutritional supplements, and functional beverages.
• Industrial Antioxidant: Serves as a stabilizer in oils, lubricants, and polymer formulations to prevent oxidative degradation.
• Research & Development: A crucial biochemical reagent for studying lipid peroxidation, membrane antioxidant mechanisms, and developing novel drug delivery platforms.

Basic Information

Product Name	3-o-Octadecyl-D-Ascorbic Acid
CAS No.	88306-82-5
Molecular Formula	C₂₄H₄₄O₇
Molecular Weight	444.60 g/mol
Synonyms	3-O-Stearyl-L-ascorbic acid; Ascorbyl stearate (isomer); Octadecyl ascorbate; Vitamin C stearate; L-Ascorbic acid 3-octadecyl ether; 6-O-Octadecyl-3-oxo-L-gulofuranolactone; Lipid-soluble Vitamin C derivative; Stearyl ascorbic acid ether
EINECS	Contact for details

Quality Control

Our 3-o-Octadecyl-D-Ascorbic Acid is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, identity confirmation by IR and NMR spectroscopy, and tests for residual solvents and heavy metals. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to ensure traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C (refrigerated) or under inert atmosphere (argon/nitrogen) for long-term storage to minimize oxidation. The material is light-sensitive and easily oxidized; keep the container tightly sealed when not in use to exclude moisture and air.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residual Solvents (GC)	Meets ICH guidelines
Heavy Metals	≤ 10 ppm

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