Table 3.

Various plants and organs containing compounds 1a and 1b.

Compound	Plant	Reference
1a	Seseli peucedanoides (roots)	[21]
	Heracleum candolleanum (seeds or roots)	[22]
1b	Ferula lutea (root)	[17]
	Peucedanum japonicum (root)	[23]
	Seseli resinosum (root)	[24]