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Specifications
| Grade | EP 11.0 grade |
| Appearance | White or almost white, hygroscopic powder, freely soluble in water |
| Identification (Sodium) | Conforms |
| Identification (Liquid chromatography) | Conforms |
| Anti-FXa/Anti-FIIa ratio | 0.9–1.1 |
| Identification (1H-NMR) | Signals at 2.04, 3.27 (doublet), 4.34, 5.22, 5.42 ppm present (±0.03 ppm); no unidentified signals greater than 4% vs 5.42 ppm in 0.10–2.00, 2.10–3.10, 5.70–8.00 ppm |
| Appearance of solution | Conforms |
| pH | 5.5–8.0 |
| Nucleotide impurity (A260 nm) | 0.15 max |
| Protein (dried substance) | 0.5% max |
| Related substances (DS+CS) | 2.0% max |
| Other chromatographic peaks | Not detected |
| Nitrogen (dried substance) | 1.5–2.5% |
| Sodium (dried substance) | 10.5–13.5% |
| Loss on drying | 8.0% max |
| Residual solvents (Methanol) | 0.3% max |
| Residual solvents (Ethanol) | 0.5% max |
| Residual solvents (Acetone) | 0.5% max |
| Content (Anti-Factor IIa, dried substance) | 180 IU/mg min |
| Bacterial endotoxins | 0.01 IU per International Unit of heparin max |
| Aerobic bacteria count | 10³ cfu/g max |
| Fungi/yeast | 10² cfu/g max |
Applications
Heparin sodium is a widely used anticoagulant and biologically active polysaccharide in medicine, biotechnology, and pharmaceutical research. It is primarily applied to prevent and treat thrombosis, deep vein thrombosis (DVT), pulmonary embolism, and other clot-related disorders in clinical settings. In surgery, dialysis, and cardiopulmonary bypass procedures, heparin sodium is used to maintain blood fluidity and prevent clot formation. In pharmaceutical research and drug development, it serves as a model anticoagulant for studying coagulation pathways, developing novel anticoagulant therapies, and optimizing drug delivery systems. Additionally, heparin sodium is employed in biomedical research as a stabilizer for proteins, enzymes, and growth factors, and as a component in biomaterial coatings to improve hemocompatibility and reduce thrombogenicity.
Benefits
The benefits of heparin sodium arise from its potent anticoagulant activity, biocompatibility, and multifunctionality. It selectively binds to antithrombin III, enhancing its inhibitory effect on thrombin and factor Xa, which effectively prevents clot formation. Heparin sodium is highly water-soluble, stable under physiological conditions, and exhibits low toxicity at therapeutic doses. Its predictable pharmacological profile allows precise dosing and monitoring in clinical applications. Beyond anticoagulation, it stabilizes biological molecules, supports controlled release in formulations, and can be chemically modified for functionalization in drug delivery and biomaterial development. Its high purity and well-characterized molecular weight distribution ensure reproducibility in laboratory and industrial applications.
Conclusion
Heparin sodium is a vital anticoagulant and multifunctional polysaccharide with broad applications in medicine, biotechnology, and pharmaceutical research. Its potent clot-preventing activity, biocompatibility, and stabilizing properties make it indispensable for clinical therapy, biomedical research, and drug development. By supporting anticoagulation, biomolecule stabilization, and functional material design, heparin sodium continues to play a crucial role in modern healthcare and scientific innovation.
