Methoprene acid is an analog of the insect growth regulator, juvenile hormone. It binds directly to RXR and is a transcriptional activator in both insect and mammalian cells. It is RXR specific and does not activate the RAR pathway. Product Specification Formula:C16H28O3 MW:268.4 CAS:53092-52-7 Purity:98% Appearance:Pale yellow oil. Long Term Storage:-20°C