Fig. 13
From: Metabolism and biomarkers of heterocyclic aromatic amines in humans
N-Acetoxy-PhIP modified human SA. Reconstructed mass chromatograms of a AW*[PhIP] AVAR ([M + 2H]2+ m/z 448.2385 > m/z 225.1135, m/z 671.3624; mass tolerance 2 ppm), b MS2 product ion spectrum of AW*[PhIP] AVAR ([M + 2H]2+, c Product ion spectrum of W*PhIP adduct following digestion with Pronase E, and d Product ion ion spectrum of the H*PhIP adduct following digestion with Pronase E and proposed structures. The base peak at m/z 332.2 is attributed to the loss of formic acid. Adapted with permission from [255]