We have integrated CASP tools within the free-to-use and open-source AI4Green electronic lab notebook (ELN). Embedding a retrosynthesis tool within an ELN obviates the need for a chemist to enter data more than once. Version 4.0 of AiZynthFinder has been integrated into a Flask application. An endpoint accepts a SMILES string as a target, uses AiZynthFinder to solve the retrosynthesis and returns the solved routes in a JavaScript Object Notation (JSON) format. This method enables the addition of future arguments from AI4Green to the endpoint, such as userspecified stock lists. The code for the Flask application is stored in a GitHub repository. The Python package Plotly Dash Cytoscape was used to visualize the route data. This displays a collection of connected nodes where each node is a molecule, and the edges linking the nodes denote a retrosynthetic relationship. The Dagre layout arranged the nodes as a treelike structure well suited for retrosynthesis with the target molecule at the top. A non-terminal node will be connected to one or more nodes below, and this iteratively continues until terminal nodes are reached. In chemical terms, a product is connected to one or more reactants below until molecules designated as building blocks by the stock file are reached.