Zakodium reposted this
For over 20 years, ChemCalc (www.chemcalc.org) has been a free tool for molecular formula analysis and mass spectrometry. What's new: • Isotopic distribution from small molecules to proteins — visualize what you actually observe in your mass spectra • Interactive exercises — randomly generated problems to learn charge determination, monoisotopic mass calculation, and isotopic pattern recognition. No login, progress tracked locally. • Revamped REST API — ready-to-use examples in JavaScript, Python, and R. Integrate ChemCalc into your Jupyter notebooks, R scripts, or data pipelines.