No, we have not detected any!
We have done a lot of extractable studies in our laboratory and in partner laboratories using Evaporative Light Scattering Detectors (ELSD) with polar and non polar solvents over a 4 week period.
In this time period, using Reversed Phase and ANP (HILIC) HPLC, we did not see any peaks at full detector sensitivity. We also examined these vials under UV and did not detect anything.
We are continuing to stress the vials and will update this note if we find any reasons.