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SunBio

SunBio. Technology Presentation. SunBio mPEG-20K. 2003. mPEG 20K Specification. Data analysis. Peak Information. Analysis Result. mPEG 20K – Main Peak Fraction & PDI by GPC. Main Peak Fraction: 100% Diol Content: undetectable Polydispersity: 1.08. Main Peak Fraction.

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SunBio

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  1. SunBio Technology Presentation SunBio mPEG-20K 2003

  2. mPEG 20K Specification

  3. Data analysis Peak Information Analysis Result mPEG 20K – Main Peak Fraction & PDI by GPC • Main Peak Fraction: 100% • Diol Content: undetectable • Polydispersity: 1.08 Main Peak Fraction Polydispersity

  4. mPEG 20K – MW & PDI by MALDI-TOF Mass 21,085 Lot #: E0506021 20K (2003.5.) Mw: 21,085 Polydispersity: 1.01

  5. (Step 1) PEG Backbone Peak (MW is obtained from MALDI-TOF) (Step 2) Methoxy Peak is set at 3 (Step 3) -OH Peak is now read: 0.9914 mPEG 20K – Diol Content by NMR In theory, with the methoxy peak (3H) set at 3, the –OH peak (1H) should be 1.0 When the –OH peak reads more than 1.0, it indicates presence of diol. If the –OH value is 1.10, the diol content is calculated as 5%.

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