Figure 2.

Tandem mass spectra of Δ-unsaturated dp4 derived from CSA (A), CSB (B), and CSC (C). The structure of Δ-unsaturated dp4 from CSA is shown in (D) with product ion assignments.

Tandem mass spectra of Δ-unsaturated dp4 derived from CSA (A), CSB (B), and CSC (C). The structure of Δ-unsaturated dp4 from CSA is shown in (D) with product ion assignments.