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|Peaks||tR (min)||Precursor Ion||Product Ion 1||Product Ion 2||Polarity|
|Column||Raptor Polar X (cat.# 9311A52)|
|Dimensions:||50 mm x 2.1 mm ID|
|Particle Size:||2.7 µm|
|Pore Size:||90 Å|
|Guard Column:||Raptor Polar X EXP guard column cartridge 5 mm, 2.1 mm ID, 2.7 µm (cat.# 9311A0252)|
|Inj. Vol.:||5 µL|
|A:||Water, 0.5% formic acid|
|Instrument||Shimadzu Nexera X2|
|Sample Preparation||A 100 ng/mL standard mix of all of the analytes in this method was prepared in plasma. A 100 µL aliquot was taken from the standard and mixed with 20 µL of 0.5 M dithiothreitol (DTT). The sample was vortexed for 10 seconds and then left to incubate at room temperature in darkness for 30 minutes. After 30 minutes, 300 µL of methanol was added, and the sample was vortexed for 10 seconds, and then centrifuged for 10 minutes at 4000 rpm. 100 µL of the supernatant was added to a 2 mL vial (cat.# 21142) containing a vial insert (cat. # 21776) and capped with a short screw cap (cat.# 24498).|
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