Synthetic reference
Sasane, Sachin Arun; Ahire, Vijay Ashok; Vyas, Rajesh; Bhise, Nandu Baban; Singh, Girij Pal. Improved process for preparation of estradiol valerate and a novel crystalline form a of estradiol divalerate. Assignee Lupin Limited, India. WO 2012059803. (2012).