95.0% of Permethrin according to Q/GDLW036-2003 standard Chemical Name: 3-(2,2-Dichloroethenyl)-2,2-dimethylcyclopropanecarboxylic acid (3-phenoxyphenyl)methyl ester CAS Number: 52645-53-1 Molecular Formula: C21H20Cl2O3 Molecular Weight: 391.29