Product Name Heparin Actigel Product Code 37304-xx Bead size 60-160µm Agarose concentration 4% Spacer arm 5 atoms, hydrophilic Flow rate 300cm/h* Binding capacity 10mg AT3 /mL resin** ; 120 Units Factor8 /ml resin*** Cleaning 0.5M NaOH Storage conditions 20% Ethanol, 2-8°C Cycle times 100 Temperature stability range 0-60°C Functional Ligand unfractionated porcine heparin Leaching <0.1 ppm pH stability range 2-13 Chemical stability High Salt, 0.5M NaOH, Urea, Guanidine, Organic Solvents: Ethanol (70%), Methanol (50%) Drug master file With U.S. Food & Drug Administration

The Ligand Heparin is a naturally occurring linear glycosaminoglycan consisting of a repeating dimer of a-L-dipyranuronic acid 2-sulfate and 2-deoxy-2-sulphamino-a-D-glucopyranose 6-sulfate. Heparin exists in a wide range of molecular weights from 5,000-30,000 Daltons. The primary linkages are 1-4 with very little 1-6 branching. Minute amounts of other sugars are also present. Heparin is highly charged and strongly acidic. Binding and Elution Immobilized heparin interacts with proteins by two different mechanisms: It can function as an affinity ligand, in which case the protein (such as a coagulation factor) is eluted with a buffer containing either salt or heparin. Heparin's anionic sulphate groups also give it the ability to function as a high-capacity cation exchanger. In this case, the protein is recovered by gradient elution with salt. With heparin’s unique combination of affinity for many proteins and ion exchange, good purification factors can be achieved despite relatively small binding affinity differences between proteins. No Detectable Leaching of Heparin Heparin Actigel is created using our Actigel ALD activated resin. Actigel ALD creates exclusively uniform, stable secondary amine linkages between the reactive monoaldehyde groups and primary amino groups of the heparin. The stability of the secondary amine is so high that leaching of the heparin is not detectable at 0.1 ppm, the sensitivity limit of the assay. In addition, Actigel ALD does not release toxic leaving groups; the leaving group during coupling is water. Easy Sanitization with NaOH Traditional heparin resins are limited by the fact that they cannot be treated with high concentrations of NaOH, the standard sanitization method for ion exchange and gel filtration media. In contrast, Sterogene’s Heparin gels can be depyrogenated by the standard treatment using 0.5M NaOH. Some 3-5 bed volumes are required. The resins can also be stored in 0.05M NaOH for extended periods of time. The stability of the coupled heparin and the stable secondary amine linkage allow the use of these Heparin gels in the pH range 2-13. Highly Reproducible Resins Irreproducible coupling is most often due to inactivation of the activated groups, a frequent problem with traditional coupling chemistries. Using ALD chemistry for heparin immobilization, coupling efficiency is high and very reproducible as no hydrolysis or inactivation of active groups take place during coupling in a side reaction. This provides a highly reproducible resin, well-suited for both research and manufacturing. Purification Applications Complement and coagulation factors RNA and DNA polymerases Restriction endonucleases Ligases Protein synthesis factors Lipases and lipoproteins Viral proteins Drug Master File Sterogene is a cGMP manufacturer of bioprocessing resins. Heparin Actigel is currently used in the production of an FDA-approved injectable therapeutic. A Drug Master File is on file with U.S. FDA. Storage The resins (as supplied) are stable for at least 2 years at 4oC. They should be stored between 4oC and 8oC at pH 7.0 with a preservative such as 0.02% merthiolate, 0.02% sodium azide or 20% ethanol. When packed into a column, Heparin gels can also be stored in 0.05 M NaOH for extended periods of time (over 6 months).

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