Is dihydrocapsaicin polar

Answer 1

Dihydrocapsaicin is not very polar, demonstrated by the fact that it is only sparingly soluble in water.

There are some polar groups in it but the benzyl-and methylnonanyl-groups are more strongly nonpolar

Polar is bolded, nonpolar is italicalized:

N-(4-Hydroxy-3-methoxybenzyl)-8-methylnonanamide

Answer 2

Yes, dihydrocapsaicin is a nonpolar molecule. It is a derivative of capsaicin, the compound responsible for the heat in chili peppers, and like capsaicin, dihydrocapsaicin is nonpolar due to its long hydrocarbon chain.