Combining NMR Spectroscopy and Chemometrics to Monitor Structural Features of Crude Hep-arin
AbstractBecause of the complexity and global nature of the heparin supply chain, the control of heparin quality during manufacturing steps is essential to ensure the safety of the final active pharmaceutical ingredient (API). For this reason, there is a need to develop consistent analytical methods able to assess the quality of heparin early in production (i.e., as the crude heparin before it is purified to API under cGMP conditions). Although a number of analytical techniques have been applied to characterize heparin APIs, few of them have been applied for crude heparin structure and composition analyses. Here, to address this issue, NMR spectroscopy and chemometrics were applied to characterize 88 crude heparin samples. The samples were also analyzed by strong anion exchange HPLC (SAX-HPLC) as an orthogonal check of the purity levels of the crudes analyzed by NMR. The HPLC data showed that the chemometric analysis of the NMR data differentiated the samples based on their purity. These orthogonal approaches differentiated samples according their glycosaminoglycan (GAG) composition and their mono and disaccharide composition and structure for each GAG family (e.g., heparin/heparan, dermatan sulfate, and chondroitin sulfate A). Moreover, quantitative HSQC and multivariate analysis (PCA) were used to distinguish between crude heparin of different animal and tissue sources. View Full-Text
- Supplementary File 1:
PDF-Document (PDF, 9129 KB)
Share & Cite This Article
Mauri, L.; Marinozzi, M.; Mazzini, G.; Kolinski, R.E.; Karfunkle, M.; Keire, D.A.; Guerrini, M. Combining NMR Spectroscopy and Chemometrics to Monitor Structural Features of Crude Hep-arin. Molecules 2017, 22, 1146.
Mauri L, Marinozzi M, Mazzini G, Kolinski RE, Karfunkle M, Keire DA, Guerrini M. Combining NMR Spectroscopy and Chemometrics to Monitor Structural Features of Crude Hep-arin. Molecules. 2017; 22(7):1146.Chicago/Turabian Style
Mauri, Lucio; Marinozzi, Maria; Mazzini, Giulia; Kolinski, Richard E.; Karfunkle, Michael; Keire, David A.; Guerrini, Marco. 2017. "Combining NMR Spectroscopy and Chemometrics to Monitor Structural Features of Crude Hep-arin." Molecules 22, no. 7: 1146.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.