1 00:00:00,000 --> 00:00:04,720 What are the options to avoid stability issues beside protecting for moisture? 2 00:00:08,360 --> 00:00:13,760 Stability is for amorphous solid dispersions then given 3 00:00:13,760 --> 00:00:20,640 When you select the right polymer for the combination with the API 4 00:00:20,640 --> 00:00:25,640 and when you select the right quantity of polymer. 5 00:00:25,640 --> 00:00:32,440 So that's what development people have to test in the very beginning 6 00:00:32,440 --> 00:00:35,760 You test a number of solvents in order to see 7 00:00:35,760 --> 00:00:40,920 which one dissolves API the best. Then you test 8 00:00:40,920 --> 00:00:43,680 the number of different polymers. 9 00:00:44,040 --> 00:00:51,280 Could be something like for the renewal pyrrolidone or polyvinyl alcohol or etc. 10 00:00:51,600 --> 00:00:57,000 They also have to dissolve in the solvent and then you have to find out 11 00:00:57,000 --> 00:00:58,880 the best combinations, 12 00:00:58,880 --> 00:01:04,920 the best quality of polymer and the best quantity of polymer. 13 00:01:04,920 --> 00:01:09,080 If you have a too little quantity of polymer 14 00:01:09,080 --> 00:01:14,160 in combination with the API and the risk of recrystallization 15 00:01:14,160 --> 00:01:19,800 is much more pronounced than if you would have more of the polymer 16 00:01:19,800 --> 00:01:24,520 that would stabilize the amorphous character of the API.