Homoisopentenyl pyrophosphate

Secondary products derived from homoisopentenyl pyrophosphate (D 7)... 

In the juvenile hormones I and II propionate is incorporated in contrast to the juvenile hormone III. It is, therefore, expected that with propionyl Co A (D 4) as the starter molecule, homoisopentenyl pyrophosphate is built in a pathway similar to that of isopentenyl pyrophosphate biosynthesis (Fig. 142). The different juvenile hormones may derive from homoisopentenyl pyrophosphate and isopentenyl pyrophosphate in the relations shown in Table 40. 

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