Cis-2-butene is a natural product, which can be found in grdelia hirsutula, grdelia stricta and other organisms with data.
The cis-2-butene and trans-2-butene were identified by GC - FID and GC - MS.
Tenax gas chromatography or cartridge method is used as adsorbent, and liquid nitrogen is used as coolant. Low temperature sampling method is...
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