Explore how molecules are represented and understood — from SMILES strings to Molfile formats.
Looking for free chemical structure software? FreeChemDraw is an online tool that allows you to draw chemical structures and reactions for free, with no installation required.
An overview of the latest chemical OCR tools for recognizing chemical structures, molecular formulas, and diagrams from images. Learn about OSRA, MolScribe, ChemPix, and ChemScanner for optical chemical recognition and structure reconstruction.
Learn what chemical structure formulas are, their types, and how to draw them easily. With FreeChemDraw, you can create and export molecular structures, visualize bonds, and build 3D models for research and education.
A complete guide to chemical reaction drawers: drawing reagents, arrows, and reaction conditions; handling stereochemistry, isotopes, and atom mapping; importing/exporting SMILES/MOL; and recognizing chemical reactions from images using OSRA. Perfect for research, patents, and education.
Comprehensive analysis of mainstream chemical structure editors in 2025, including ChemDraw, ChemDoodle, MarvinSketch, Ketcher, and FreeChemDraw. In-depth comparison of features, pricing, and use cases to help researchers, students, and developers choose the best chemical drawing software.
FreeChemDraw is a free online tool for drawing and recognizing chemical structures. Built on the open-source Ketcher editor and OSRA OCR, it supports molecule drawing, image structure recognition, and can generate structures from CAS numbers or IUPAC names, helping researchers manage chemical data efficiently.
