Crystal structure of pyriproxyfen

Abstract

In the title compound {systematic name: 4-phenoxyphenyl (RS)-2-[(pyridin-2-yl)oxy]propyl ether}, C20H19NO3, which is a juvenile hormone mimic and insecticide, the dihedral angles between the plane of the central benene ring and those of the pendant pyridine ring and phenyl ring are 78.09 (6) and 82.14 (8)°, respectively. The conformation of the O—C—C—O linkage isgauche[torsion angle = −75.0 (2)°]. In the crystal, weak aromatic π–π stacking interactions [centroid–centroid separation = 3.8436 (13) Å] and C—H...π interactions link adjacent molecules, forming a three-dimensional network.