Chemical Name:2 - [(3-4 - butyl cyano - oxygen radicals) phenyl] - 4 - methyl - 5 - thiazole carboxylic acidMolecular Formula:C16H16N2O3SMolecular Weight:316.37Physical Character:The product is white powder.Heavy metals:0.002% maxLoss on drying:0.1%Residue on ignition:0.1% maxAssay:98.0%-102.0%