Recursos programas dibujo químico

Especialmente en orgánica, es interesante un programa para dibujar compuestos.
En los problemas PAU Química he utilizado bkchem

Existen opciones como Name To Structure - openmolecules.org

También hay algunos programas que son apps para móvil, ver apps química

BKChem, free chemical drawing program.
BKChem
En 2021 veo que BKChem está en metapaquete ubuntu science-chemistry, pero no disponible para 20.04

Otra opción en ubuntu 20.04 es chemtool

ACD/ChemSketch Freeware is a drawing package that allows you to draw chemical structures including organics, organometallics, polymers, and Markush structures.
https://www.acdlabs.com/resources/freeware/chemsketch/

MarvinSketch. Create and Design - chemaxon.com

KingDraw
Professional chemical structure editor.
KingDraw App is a free chemical drawing editor that allows users to sketch molecules and reactions as well as organic chemistry objects and pathways. Users can also use it to analyze compound property, convert chemical structures to IUPAC names, view 3D models, etc. KingDraw will provide strong software support for chemical research, including more chemical related functions and new structure drawing modes to connect Android&iOS device and PC, realizing rapid transforming from KingDraw to Office, ChemDraw and picture. And finally you will build an all-platform chemical structure system through your KingDraw cloud account.

JChemPaint. Chemical 2D structure editor application/applet based on the Chemistry Development Kit

The JChemPaint Applet on github

Chem-space

Chemspace is the largest online catalogue of small molecules: Building Blocks, Fragments, Screening Compounds, Reagents, and Intermediates. We also provide sourcing and procurement services.
Ejemplo Estructura en SMILES CC(=C)CC(C)(C)C

Demos > IUPAC Naming. chemdoodle.com
A partir de nombre iupac dibuja estructura Pestaña Name to Structure Demos > IUPAC Naming. chemdoodle.com