Not Less Than - 95%
N-[2-[(1S)-1-(3,4-Dihydroxyphenyl)-2-(methylsulfonyl)ethyl]-2,3-dihydro-1,3-dioxo-1H-isoindol-4-yl]acetamide;(S)-N-(2-(1-(3,4-Dihydroxyphenyl)-2-(methylsulfonyl)ethyl)-1,3-dioxoisoindolin-4-yl)acetamide;