It is common for compounds to precipitate when a stock solution in a solvent such as DMSO is diluted with aqueous media. Most of these precipitates will redissolve with a few minutes of vortexing or sonication, or brief warming in a 37°C water bath with sonication. While this type of precipitation will not harm the compound, it is important to take the time to be sure the precipitate has completely redissolved before using the solution.