Environmental Sample Stability for Pharmaceutical Compound Analysis: Handling and Preservation Recommendations

Figure 1

UPLC-UV chromatogram of ACM, TMP, OTC, SMX, and EE2 at selected wavelength. The retention times (RT) are 2.49 (ACM), 5.22 (TMP), 5.48 (OTC), 6.70 (SMX), and 9.6 min (EE2).