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Retracted papers linked to 2007 extortion attempt

Researcher was sent e-mail demanding money.

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  2. Xu, R. et al. J. Am. Chem. Soc. 126, 15654-15655 (2004).

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  5. Alfonta, L., Zhang, Z., Uryu, S., Loo, J. A. & Schultz, P. G. J. Am. Chem. Soc. 125, 14662-14663 (2003).

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With reporting by Rex Dalton.

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Check Hayden, E. Retracted papers linked to 2007 extortion attempt. Nature (2009).

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