I have two solutions containing sodium oxybate, but no easy way to determine the quantity in either, or for maybe at the simplest level, prove they are not the same formulation?
I've had a chemistry friends suggest gc-ms, but that I gather would only really address whether sodium oxybate is present in the solutions and nothing more.https://patents.google.com/patent/US10398662B1/en
"The solubility of sodium oxybate is unusually high. For example, a Xyrem solution is provided as 500 mg/mL concentration in water, or 42 wt %, and its solubility limit is considerably higher."
In this case, it's consistently been registering at 41.69%-41.75 solution weight, hence trying to dig a little deeper.
Could the nature of tests that could be shedding light on this or the proper way to approach the problem have some light shed on it?