Accurate

ChemEx accurately simulates spin evolution across the entire pulse sequence, enabling precise modeling of experimental factors like pulse imperfections, off-resonance effects, and phase cycling.

Versatile

Analyze CPMG relaxation dispersion, CEST, D-CEST/cos-CEST, relaxation, and exchange-induced shift experiments, then combine datasets from multiple experiments with multi-state kinetic models.

Open Source

ChemEx is a GPLv3-licensed open-source Python application, built on established packages like Numpy, Scipy, Matplotlib, Pydantic, and Rich.