Description

1-Palmitoyl-2-Stearoyl-3-Butyryl-Rac-Glycerol is a structured triacylglycerol (TAG) with a specific fatty acid composition at each sn-position of the glycerol backbone. This precise molecular architecture is critical for applications requiring controlled lipid behavior, such as in advanced lipid-based drug delivery systems and specialized nutritional formulations. It is a key intermediate and functional ingredient for pharmaceutical, nutraceutical, and high-end cosmetic research and manufacturing.

Application

• Lipid-Based Drug Delivery Systems: Used as a structured lipid component in Solid Lipid Nanoparticles (SLNs), Nanostructured Lipid Carriers (NLCs), and self-emulsifying drug delivery systems (SEDDS) to enhance drug solubility and bioavailability.
• Pharmaceutical Excipient: Serves as a functional lipid matrix for controlled-release formulations and as a carrier for lipophilic active pharmaceutical ingredients (APIs).
• Specialized Nutrition: Acts as a synthetic analog of human milk fat or a structured lipid for medical nutrition and infant formula research, designed for specific metabolic pathways.
• Biochemical Research: Employed as a standard or substrate in enzymatic studies (e.g., lipase activity assays) and metabolic research due to its defined structure.
• Cosmetic Actives Carrier: Functions as an emollient and penetration enhancer in high-performance skincare products for the delivery of vitamins and antioxidants.
• Synthetic Intermediate: Used in organic synthesis for the preparation of more complex lipids, phospholipids, or labeled compounds for research.

Basic Information

Product Name	1-Palmitoyl-2-Stearoyl-3-Butyryl-Rac-Glycerol
CAS No.	152914-63-1
Molecular Formula	C45H86O6
Molecular Weight	723.17 g/mol
Synonyms	Rac-1-Palmitoyl-2-stearoyl-3-butyrylglycerol; 1-Palmitoyl-2-stearoyl-3-butyrylglycerol; PSBut; Glycerol 1-palmitate 2-stearate 3-butyrate; TAG (16:0/18:0/4:0); Triacylglycerol PSB; Butyrylpalmitoylstearoylglycerol; rac-PSB triglyceride
EINECS	Contact for details

Quality Control

Our 1-Palmitoyl-2-Stearoyl-3-Butyryl-Rac-Glycerol is produced under strict quality management systems. Each batch is characterized and tested to ensure identity, purity, and consistency, meeting the stringent requirements for research and formulation. Certificates of Analysis (COA) with detailed chromatographic data (HPLC/GC) are provided to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at 2-8°C or as specified on the label or COA. This product is easily oxidized; prolonged exposure to air and elevated temperatures should be avoided to maintain stability.

Specification

Item	Specification
Appearance	White to off-white solid or waxy solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Fatty Acid Composition (GC)	Conforms to palmitic, stearic, butyric acid profile
Melting Point	Contact for details
Acid Value	≤ 1.0 mg KOH/g
Peroxide Value	≤ 5.0 meq/kg
Heavy Metals	≤ 10 ppm
Residual Solvents (GC)	Meets ICH guidelines

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