ok, bro did a little diggin and found that is is soluble in water 2.9mg/ml in water at a pH of 5.2. Not sure if you have a ph test strips of not. This is total an educated guess, but I would take regular distilled water and add about a few mls of vinagear to it to get the ph down. I'm not sure what happens to the compound below 5.2, it probably denatures since thats the lowest solublity I could find. Another option would be to use say 5 ba in with the water, ba really isn't that acidic so you would still nedd the vinegar but less, maybe only like 2-3 mls to make a 100 total. Using the ba may help you gain solubility. Let us know what happens.