... : 94% Min. Other name: d-trans-cyphenothrin; Cyphenothrin. Chemical name: (R,S)a-cyano-3- ... Molecular formula: C24H25NO3. Molecular weight: 375. PROPERTIES: d-Cyphenothrin is pyrethrin insecticides. It has strong contact and stomach poisoning ... -repellent test by dipping mosquito net in liquids of d-cyphenothrin, permethrin, d-phenothrin, fenpropathrin and fenvalerate respectively. TOXICOLOGY: ...