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Wolkenstein, K., Sun, H., Falk, H. & Griesinger, C. Structure and absolute configuration of Jurassic polyketide-derived spiroborate pigments obtained from microgram quantities.

On the basis of this, the absolute configuration of the structure was assumed to be correctly assigned and free from inversion twinning.

Almost all biologically active molecules are chiral, and the correct determination of their absolute configuration is essential for the understanding and the development of processes involving chiral molecules.

Our technique provides unambiguous and direct access to the absolute configuration of small gas-phase species, including ions and molecular fragments.