Not Less Than - 95%
Ethyl (S)-2-hydroxy-4-phenylbutanoate; (S)-4-Phenyl-2-hydroxybutanoic acid ethyl ester; (S)-Ethyl 2-Hydroxy-4-phenylbutanoate; Ethyl (S)-2-hydroxy-4-phenylbutyrate; Ethyl (S)-α-hydroxybenzenebutanoate