Table 1.

Cerambycid pheromone components that were detected by odorant receptors of the cerambycid Megacyllene caryae. Receptors were expressed in oocytes of Xenopus laevus and tested against a panel of chemicals in a voltage clamp. Sensitivity is expressed as the concentration of odorant yielding a half-maximal response (EC₅₀ ± SEM).

Odorant Receptor	Ligand	EC50 (µM)
McOr3	(S)-methylbutan-1-ol	25±7.36
	(R)-methylbutan-1-ol	100±36.3
McOr5	2-phenylethanol	150±32.5
McOr20	(2S,3R)-2,3-hexanediol	120±57.4
	(2R,3S)-2,3-hexanediol	1430±1331
	(2S,3S)-2,3-hexanediol	330±77.2
	(R)-3-hydroxyhexan-2-one	350±154.6