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. 2012 Nov 6;7(11):e48981. doi: 10.1371/journal.pone.0048981

Figure 1. Preparation of biotinylcyslabdan.

Figure 1

The structures of cyslabdan and biotinylcyslabdan are shown. The carboxyl moiety of the N-acetylcysteine residue of cyslabdan was modified with amine-(PEO)2-biotin to synthesize biotinylcyslabdan.