---
title: "Draw a Chemical Reaction Free | Reaction Drawer | MolDraw"
url: https://www.moldraw.com/tools/free-chem-tools/chemical-reaction-drawer.html
description: "Draw a chemical reaction free in your browser. Sketch reactants, an arrow, products, and conditions, then export. Open an aldol, Wittig, or Suzuki example and edit it."
lang: en
publisher: Scidart Academy
generated: 2026-10-26
---
Free reaction drawer

# Draw a chemical reaction in your browser

**In short:** Draw a chemical reaction. It is free, works in your web browser and needs no download.

Sketch the reactants, the arrow, the products, and the conditions. Then export the scheme, or start from an aldol, Wittig, or Suzuki example and edit it.

[Draw this reaction](https://www.moldraw.com/?reaction=CC%3DO.CC%3DO%3E%3EC%2FC%3DC%2FC%3DO) [Start from a blank canvas](https://www.moldraw.com/)

## Aldol example

CH3CHO + CH3CHO → CH3CH(OH)CH2CHO

NaOH, then heat for the condensation

Opens in the editor with both acetaldehydes and the aldol product, ready to edit.

## Start from a named reaction

Each one opens in the editor so you can change structures, add conditions, and export.

### Aldol condensation

Two acetaldehydes to the aldol product.

[Draw aldol reaction](https://www.moldraw.com/?reaction=CC%3DO.CC%3DO%3E%3EC%2FC%3DC%2FC%3DO)

### Wittig reaction

Benzaldehyde and a phosphorus ylide to styrene.

[Draw Wittig reaction](https://www.moldraw.com/?reaction=O%3DCc1ccccc1.C%3DP(c1ccccc1)(c1ccccc1)c1ccccc1%3E%3EC%3DCc1ccccc1)

### Suzuki coupling

Phenylboronic acid and bromobenzene to biphenyl.

[Draw Suzuki reaction](https://www.moldraw.com/?reaction=B(O)(O)c1ccccc1.Brc1ccccc1%3E%3Ec1ccc(-c2ccccc2)cc1)

## What you can draw

**Reactants**Draw or paste molecules on the left of the arrow.

**Products**Put the products on the right and check the atoms.

**Conditions**Add the reagent, solvent, temperature, or catalyst on the arrow.

**Export**Copy SVG or download an image for a report or slide.

## Related tools

[Organic reaction guides](https://www.moldraw.com/reaction/) [ChemDraw online alternative](https://www.moldraw.com/blog/chemdraw-vs-moldraw-free-alternative-guide.html) [Chemical equation balancer](https://www.moldraw.com/tools/free-chem-tools/chemical-equation-balancer.html) [TLC diagram tool](https://www.moldraw.com/tools/free-chem-tools/tlc-diagram-tool.html)

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[Structure to SMILES Converter](https://www.moldraw.com/tools/free-chem-tools/structure-to-smiles-converter.html)[Build a Molecule](https://www.moldraw.com/tools/free-chem-tools/build-a-molecule.html)[Lewis Structure Generator](https://www.moldraw.com/tools/free-chem-tools/lewis-structure-generator.html)[Name to Structure Tool](https://www.moldraw.com/tools/free-chem-tools/name-to-structure.html)[Name reaction finder](https://www.moldraw.com/tools/free-chem-tools/name-reaction-finder.html)

Last updated: October 11, 2026