https://www.selleckchem.com/products/epertinib-hydrochloride.html In recent years, the stability of biotherapeutics in vivo has received increasing attention. Assessing the stability of biotherapeutics in serum may support the selection of adequate molecule candidates. In our study, we compared the physical stability of 8 different monoclonal antibodies (mAbs) in phosphate-buffered saline (PBS) and human serum. mAbs were Alexa Fluor 488-labeled and characterized with respect to fragmentation, aggregation, and proteinaceous particle formation. Samples were analyzed using size-exclusion chromatography, light obscuration, and flow imaging. In addition, novel methods such as flow cytometry and fluorescence microscopy were applied. mAbs were selected based on their hydrophobicity and isoelectric point. All mAbs studied were inherently less stable in human serum as compared to PBS. Particle size and particle counts increased in serum over time. Interestingly, certain mAbs showed significant levels of fragmentation in serum but not in PBS. We conclude that PBS cannot replicate the physical stability measured in serum. The stability of labeled mAbs in human serum did not correlate with their hydrophobicity and isoelectric point . Serum stability significantly differed amongst the tested mAbs. V.The aim of this research was to simulate oral pharmacokinetic (PK) profiles of atorvastatin from orally disintegrating tablets (ODTs) dosed without water ingestion in fasted humans. The in vitro dissolution profiles of three different formulations of ODTs were evaluated with fasted state biorelevant media using a paddle dissolution apparatus, and the results were coupled with an in silico model to simulate the in vivo oral PK profiles of ODTs following administration to humans. Since the dissolution rates of the ODTs in the intestinal medium (FaSSIF-V2) were highly affected by pre-exposure of the tablets to the stomach medium (FaSSGF), the simulation model took account of the relatio