Description  Claims  Cited references 

WO2013186229A   [0007]  [0445] 
WO2014009295A   [0007] 
WO2014009296A   [0007] 
EP0706795A   [0011] 

Drug Discovery Today   [0004] 
J. Sexual Medicine   [0004] 
Handbook of Pharmaceutical Salts: Properties, Selection and Use   [0018] 
Pharmaceutical Salts and Co-crystals,   [0020] 
Design of Prodrugs   [0021] 
J. Med. Chem.   [0123] 
ACS Med. Chem. Lett.   [0123] 
JAMA   [0347] 
J. Clin. Invest.   [0350] 
Protective Groups in Organic Chemistry   [0442] 
Protective Groups in Organic Synthesis   [0442]