Details for Patent: 9,149,539
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Title: | Crystalline naloxol-PEG conjugate |
Abstract: | Naloxol-polyethylene glycol conjugates of the formula: ##STR00001## are provided in oxalate or phosphate salt forms including crystalline forms. Methods of preparing the salt forms and pharmaceutical compositions comprising the salt forms are also provided. |
Inventor(s): | Aslund; Bengt (Sodertalje, SE), Aurell; Carl-Johan (Sodertalje, SE), Bohlin; Martin Hans (Sodertalje, SE), Sebhatu; Tesfai (Sodertalje, SE), Ymen; Bo Ingvar (Sodertalje, SE), Healy; Eric Thomas (Madison, AL), Jensen; David Richard (Harvest, AL), Jonaitis; David Thomas (Brookston, IN), Parent; Stephan (West Lafayette, IN) |
Assignee: | ASTRAZENECA AB (Sodertalje, SE) NEKTAR THERAPEUTICS (San Francisco, CA) |
Filing Date: | Mar 11, 2015 |
Application Number: | 14/645,347 |
Claims: | 1. A crystalline phosphate salt of mPEG7-O-naloxol having XRPD d values of (.ANG.) comprising 21.0; 12.1; 7.9; 6.5; 5.3; 4.83; 4.24; 3.81; and 3.75. |