As part of Juliacon 2022 (https://juliacon.org/2022/) we will run a workshop on “Modeling of Chemical Reaction Networks using Catalyst.jl” (registration for Juliacon is required but free). Catalyst.jl is a Julia-based symbolic modeling package for analysis and high performance simulation of chemical reaction networks. Catalyst models can be used to generate symbolic ModelingToolkit-based models, allowing the easy simulation and parameter estimation of mass action ODE models, Chemical Langevin SDE models, stochastic chemical kinetics jump process models, and more. Generated models can be used with solvers throughout the broader SciML and Julia ecosystem, including higher level packages (e.g. for sensitivity analysis, parameter estimation, machine learning applications, structural identifiability and more).