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MB Sample ID: SA330839

Local Sample ID:WT_C
Subject ID:SU003162
Subject Type:Mammal
Subject Species:Mus musculus
Taxonomy ID:10090

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Combined analysis:

Analysis ID AN004998
Analysis type MS
Chromatography type GC
Chromatography system Agilent 8890
Column Agilent DB5-MS (30m x 0.25mm, 0.25um)
MS Type EI
MS instrument type GC-Q-MS
MS instrument name Agilent 5977B
Ion Mode POSITIVE
Units relative abundance

MS:

MS ID:MS004738
Analysis ID:AN004998
Instrument Name:Agilent 5977B
Instrument Type:GC-Q-MS
MS Type:EI
MS Comments:Cell homogenates were prepared by adding 1:1 v/v water: methanol and sonicated with a dr.hielscher UP200S (dr.hielscher, Berlin, Germany), set up to 80% intensity, 0.5 s/pulse, 16 pulses. For GC-MS, 100 μL of each homogenate was mixed with 300 μL of cold methanol containing 25 ppm D-palmitic acid (internal standard), vortex mixed for 60 min and centrifuged at 4000 g for 20 min. 250 μL of the supernatant were transferred to a vial with a glass insert and evaporated to dryness in a Gyrozen HyperVac VC2124 (Gimpo, Korea) coupled to a LVS 110Z (Gardner Denver Thomas GmbH Welch Vacuum, Fürstenfeldbruck, Germany). The samples were then submitted to methoximation (with O-methoxyamine) for 16 h and silylation for 1 h at 70ºC with N,O-Bis(trime5j,thylsilyl)trifluoroacetamide (BSTFA) and trimethylchlorosilane (TCMS), and finally resuspended in 100 μL heptane. The samples were injected onto a DB5-MS column (30 m x 0.250 mm, 0.25 μm) with a 10 m pre-column (Agilent Technologies, Santa Clara CA, USA). Helium was used as mobile phase at constant flow rate (1 mL/min) in a GC-Q-MS 5975 system (Agilent Technologies) with an Electron Ionization (EI) source at 70 eV.
Ion Mode:POSITIVE
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