This invention provides a compound with parasitic plant germination regulation activity (in particular, parasitic plant germination-inducing activity), and a parasitic plant germination regulator comprising the compound. A compound represented by Formula (1), wherein R1 represents a group derived from a nitrogen-containing heterocycle, R2 represents a divalent group as a linker, R3 represents optionally substituted aryl, optionally substituted heteroaryl, optionally substituted cycloalkyl, or alkyl containing 1 to 6 carbon atoms, R4, R5, and R6 are identical or different, and each represents hydrogen, halogen, optionally substituted alkyl, optionally substituted alkenyl, or optionally substituted alkynyl.
