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2. Nε-(thiaprolyl)-lysine as a handle for site-specific protein conjugation
3. Material safety data sheet of thiophenol from Sigma–Aldrich:http://www.castleviewuk.com/Frameless/Safe/msds/ex/MSDS_thiophenol.htm.
4. Benzenethiol: health-based reassessment of administrative occupational exposure limits;Health Council of the Netherlands: Committee on updating of occupational exposure limits,2004