Butlerov – 2D chemical structure editor

Butlerov is a 2D chemical structure editor designed for fast construction and editing of molecular structures. The project provides a browser-based editor that can be embedded in applications, together with a Vue 3 component and an Electron desktop application.

The editor places particular emphasis on efficient interaction using the keyboard, mouse and context menus. Rather than requiring users to manually position every bond, Butlerov automatically adjusts molecular geometry to produce predictable and symmetrical layouts. It understands common geometries associated with linear, trigonal and tetrahedral arrangements while still allowing individual bonds to be repositioned when working with congested or bridged structures.

Users can construct chains, rings and fused ring systems, create single and multiple bonds, and work with charges, isotopes and superatoms. Abbreviations such as CO₂H and TMS can be used directly in structures. Unlimited undo and redo are available, together with symmetry tools intended to keep drawings tidy.

This is free and open source software.

Key Features

• Draw chains, rings, fused systems and structures with single or multiple bonds.
• Provides keyboard, mouse and context-menu workflows for rapid structure editing.
• Supports charges, isotopes, superatoms, abbreviations and automatic geometry adjustment.
• Reads and writes MDL MOL and SDF data and calculates molecular formulae and masses.
• Provides reusable JavaScript and Vue components together with an Electron desktop application.

Website: github.com/eizemazal/butlerov
Support:
Developer: Lumiprobe Group
License: MIT License

Butlerov is written in TypeScript. Learn TypeScript with our recommended free books and free tutorials.

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