Background:

β-Elemene is a monoterpene that has been found in C. sativa.[1] It is intended for use as an analytical standard for the detection of β-elemene by GC- or LC-MS.
Reference：
[1]. Ross, S.A., and ElSohly, M.A. The volatile oil composition of fresh and air-dried buds of Cannabis sativa J. Nat. Prod. 59(1), 49-51 (1996).