All Photos(2)



Escort IV Transfection Reagent

Lipid reagent for transient and stable transfection of mammalian and insect cells.


Quality Level


for molecular biology


liquid (aqueous solution)


 mL sufficient for 160-500 transfections


1 mg/mL


transfection: suitable

storage temp.


Related Categories

General description

Escort IV is a unique formulation of a proprietary polycationic lipid and a neutral non-transfecting lipid. This liposome-forming compound is used for transfection of nucleic acids into a wide variety of eukaryotic cell types.


Suitable for transient and stable transfection of nucleic acids into cultured eukaryotic cells. Use approximately 4-16 μL Escort IV and 2 μg DNA per 6 cm cell culture plate. Protocol optimization provides very efficient transfection. For a list of cells that have been successfully transfected using Escort IV, see the Transfection Reagent Selection Guide.

Features and Benefits

  • Suitable for stable and transient transfection
  • Optimized for a wide variety of cell lines
  • Low toxicity
  • Compatible with both serum and serum-free transfection protocols
  • Ideal for Sf9, Sf21 and S2 insect cells


Escort IV formulation:
1 mg/mL total lipid in water

Note the identity of the lipids used in Escort IV is confidential.


Do not freeze.


A stable complex is formed when Escort IV is mixed with DNA in the absence of serum. The complexes are stable and can be directly added to the cell culture medium, where they fuse with the cell membrane, releasing the DNA into the cytoplasm. Note: complex formation is inhibited by serum, but once stable complexes have formed, the presence of serum is without consequence.

Legal Information

Escort is a trademark of Sigma-Aldrich Co. LLC

Storage Class Code

12 - Non Combustible Liquids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).


Introduction to Cell Transfection

Transfection is the introduction of DNA, RNA, or proteins into eukaryotic cells and is used in research to study and modulate gene expression. Thus, transfection techniques and protocols serve as an analytical tool that facilitates the characterization of genetic functions, protein synthesis, cell growth and development.

How Transfection Works

This brief webinar provides an overview of what transfection is and the methods that are used to introduce DNA or RNA into eukaryotic cells.


Lipid Transfection Optimization Protocol

Expert guidance on the best way to optimize your transfection experiments. Optimized protocols result in highest efficiency transfections.

Escort™ III Transfection Reagent Protocol

The product bulletin providin detailed use protocol for easy DNA transfection.

Escort™ IV Transfection Reagent Protocol

Product manual provides detailed protocol for easy DNA transfection.

Universal Transfection Reagent Protocol

Our Universal Transfection Reagent is a unique formulation of a proprietary polymer blend used for transient and stable transfection of nucleic acids into various eukaryotic cell lines and hard-to-transfect primary cells. This is a fast and easy protocol is compatible with serum, serum-free medium and antibiotics.

See All

Related Content

Transfection Reagent Selection Guide

Browse our convenient transfection reagent selection guide to match the best reagent for your specific cell line and application needs.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service