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. 2017 Aug 11;28(11):2319–2329. doi: 10.1007/s13361-017-1756-2

Table 1.

MS Acquisition Time Segments with Precursor and Product Ion Masses, Compound-Specific Declustering Potentials (DP), Collision Energy Potentials (CE), Collision Cell Exit Potentials (CXP) and Typical Fragment Ion Ratios from Various Matrices

Period start time (min) Compound Precursor ion m/z Fragment Ion
Product
m/z
Dwell time (ms) DP (V) CE (V) CXP (V) Quantitation (Q)
Confirmation (C)
C/Q ion ratio
0.0 Cholesteryl ester 369 161 25 0 15 5.0 Q 0.39
(±0.05)
81 25 0 20 5.0 C
Cholesteryl-d7 palmitate (IS) 376 161 25 0 15 5.0 Q 0.31
(±0.01)
81 25 0 20 5.0 C
0.4 Triglycerides 95 67 40 262 20 10.7 Q 0.51
(±0.04)
55 40 262 26 8.8 C
d98-Tripalmitin (IS) 98 50 40 262 15 15.0 Q 0.65
(±0.05)
106 74 40 262 25 15.0 C
1.0 Free cholesterol 369 161 25 10 15 5.0 Q 0.67
(±0.06)
81 25 10 20 5.0 C
d7-Cholesterol (IS) 376 161 25 10 15 5.0 Q 0.64
(±0.03)
81 25 10 20 5.0 C