Not Less Than - 95%
2-[(2-Amino-1,6-dihydro-6-oxo-9H-purin-9-yl)methoxy]-3-hydroxypropyl Ester L-Valine (S)-Valganciclovir; 2-((2-Amino-6-oxo-3,6-dihydro-9H-purin-9-yl)methoxy)-3-hydroxypropyl L-valinate