Abstract
Some signals in the (1)H NMR spectra of heparin and oversulphated chondroitin sulphate (OSCS) are occasionally broad or very broad owing to the presence of paramagnetic metal ions in those polysaccharides. The addition of very small amounts of EDTA to heparin or to OSCS contaminated heparin solutions was needed to obtain normal looking spectra.
MeSH terms
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Chondroitin Sulfates / analysis*
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Edetic Acid / analysis*
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Electron Spin Resonance Spectroscopy / methods
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Heparin / analysis*
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Ions
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Magnetic Resonance Spectroscopy / methods*
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Magnetic Resonance Spectroscopy / standards
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Metals, Heavy / analysis*
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Protons
Substances
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Ions
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Metals, Heavy
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Protons
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Heparin
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Chondroitin Sulfates
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Edetic Acid