Not Less Than - 95%
2-[1-(3-Ethoxy-4-methoxyphenyl)-2-methylsulfonylethyl]-4-aminoisoindoline-1,3-dione;1H-Isoindole-1,3(2H)-dione, 2-[1-(3-ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl]-;N-Deacetyl Apremilast