Table 1.

Repellency of hydronopylformamides against Blattella germanica at a concentration of 20 mg/mL.

Compounds	R	Melting Point	Repelling Rate ± Standard Error (%)
8a	CH3	38.0–38.5	67.06 ± 3.07
8b	CH2CH3	41.5–42.2	38.89 ± 3.61
8c	C6H5	84.7–85.7	41.19 ± 6.05
8d	4-CH3-C6H4	125.1–126.3	−1.83 ± 5.18
8e	4-Cl-C6H4	123.2–124.2	8.45 ± 7.81
8f	2-Cl-C6H4	108.8–109.4	−5.48 ± 9.97
8g	2-NO2-C6H4	54.3–55.3	−23.59 ± 6.67
Ethanol	-	-	0.39 ± 1.18
Acetone	-	-	0.71 ± 1.42
DEET	-	−33.0	54.77 ± 6.61