“…[13] Moxidectin loses the aliphatic side chain (-C 7 H 12 O) from the protonated molecule thereby producing the ion at m/z 528 (Product Ion I, #6), as described by Awasthi et al [14] Further fragmentation led to the ion at m/z 498 (Product Ion II, # 6), and the ion at m/z 199 resulted from fragmentation of the macrocyclic lactone. [14] For emamectin and eprinomectin, the three selected product ions are from the saccharide portion of the molecule, observed at m/z 302, 158, and 126 ( Table 4 (#3-4) are in agreement with the product ions reported for mectins by Alberts-Shönberg et al [15] Saccharide product ions were also selected for avermectin (m/z 145 and 113, #1), doramectin (m/z 145 and 113, #2), ivermectin [16] (m/z 183, #5) and selamectin (m/z 145 and 113, #7). In the case of selamectin, the side-chain ion with m/z 95 (Product Ion III, #7) was also selected.…”