https://www.selleckchem.com/pr....oducts/Rapamycin.htm
3 → 423.5 for β-elemonic acid and m/z 455.3 → 407.6 for IS. β-Elemonic acid showed good linearity over the investigated concentration range (r 0.9934) in rat plasma and tissue sample. The method was successfully applied for determination of β-elemonic acid in bio-samples. A bimodal phenomenon appeared in the plasma concentration-time curve of the β-elemonic acid. The highest tissue concentrations were found in the intestine including jejunum, ileum and colon.The aim of this work is to contribute to the assessment of multi-residue