N-1-naphthylphthalamic acid

N-1-naphthylphthalamic acid

[¦en ¦wən ¦naf·thil·thə′lam·ik ′as·əd]
(organic chemistry)
C10H7NHCOC6H4COOH A crystalline solid with a melting point of 185°C; used as a preemergence herbicide.
References in periodicals archive ?
AUXIN TRANSPORT INHIBITOR N-1-NAPHTHYLPHTHALAMIC ACID ON
IAA is transported downward in the plant by a complex cell to cell mechanism that is sensitive to inhibition by N-1-naphthylphthalamic acid (NPA).
In earlier experiments, we increased auxin concentration in monofoliate bean leaves by either exogenous auxin application or by elevating the endogenous hormone level by applying the auxin transport inhibitor N-1-naphthylphthalamic acid (NPA) to the leaf petiole.