Structure Determination of a Natural Juvenile Hormone Isolated from a Heteropteran Insect

Figure 6

Detection of JHSB₃ (1) from the hemolymph of Plautia stali females. Hemolymph samples collected from reproductively active (a) and diapausing females (b), and 10 ng of synthetic standard of JHSB₃ (c) were analyzed on GC-MS using a DB-35MS column. Vertical axis indicates signal intensity for m/z 283, [M+H]⁺ (solid line) and m/z 300, [M+NH₄]⁺ (dotted line). Insets in a and c indicate a mass spectrum of the peak at 16.2 min [14].

(a)

(b)

(c)