... penetration enhancer, its penetration enhancing effect is 2.99 times of that from Azone which was used extensivel Thiazone ... effect penetration enhancer, its penetration enhancing effect is 2.99 times of that from Azone which was used extensively. ... Weight: 239.29 PropertiesAppearance: Colorless or light yellow crystalsAssay: 99 %Solubility: soluable in organic solvents such as methyl benzene, ...