Not less than-95.0%
Propanedioic acid, 2-(2-methoxyphenoxy)-, 1,3-diethyl ester; 1,3-Diethyl 2-(2-methoxyphenoxy)propanedioate; Malonic acid, (o-methoxyphenoxy)-, diethyl ester; Propanedioic acid, (2-methoxyphenoxy)-, diethyl ester; Diethyl (2-methoxyphenoxy)malonate; Diethyl α-guaiacoxymalonate;