How to Draw Chemical Structures for Reports: Publication-Quality Software Compared

The reason this question gets a generic answer in most software listicles is that “drawing a chemical structure for a report” is actually three different problems wearing the same shirt. The structure has to be chemically correct (right valences, right stereochemistry, right ring fusion). The drawing has to match a journal’s graphical conventions (bond length, font, line weight, atom labels). And the export has to land in your actual document — usually Word or LaTeX — without rasterizing into a fuzzy bitmap or losing the structure data.

This post compares the structure-drawing tools that practitioners actually use for reports against those three criteria. The shortest version: any modern editor will draw your molecule. Far fewer will produce a figure that looks right by ACS or IUPAC conventions. Even fewer will round-trip cleanly through your document toolchain.

What “publication quality” actually means

The American Chemical Society’s document-style standard, often referenced as the ACS 1996 spec, gives concrete numbers most practitioners do not memorize but every well-rendered figure conforms to:

• Bond length: 14.4 pt (about 0.20″ or 5.08 mm) on the page
• Bond line weight: 0.6 pt
• Atom label font: Arial or similar sans-serif, 10 pt
• Margin: white background, black bonds, regardless of dark mode in your editor

Nature Chemistry and the RSC journals use slightly different defaults but the discipline is the same: every structure in the manuscript renders at the same bond length, with the same line weight, with consistent atom-label sizing. Mixed conventions across figures are the most visible “this manuscript was assembled in a hurry” signal a reviewer can spot in two seconds.

For internal reports and group presentations the bar is lower — consistency within the document matters more than journal compliance. But the same tool that produces clean ACS-compliant figures will also handle internal reports without fuss; the reverse is not true.

The four format categories you will export to

Choose your editor partly on what your downstream document needs:

• SVG — vector, scales without quality loss, the right answer for LaTeX (via \includegraphics) and modern Word (paste-as-picture preserves vector). Always prefer SVG over PNG when both are available.
• PNG at 300+ DPI — raster, fine for screen and most print output if the resolution is high enough. Many journals require 300–600 DPI for raster figures; 72 DPI is screen-only and will look crunchy in print.
• EMF (Windows) — vector, native to Word, but loses fidelity in cross-platform documents. Mostly legacy.
• MOL / CDX / RXN — the structure data itself. Useful when the figure may be re-edited later, or when supplementary information requires the source structure.

Tools for drawing chemical structures for reports

The tools chemists actually reach for for report figures fall into three buckets.

Heavyweight desktop editors

• ChemDraw (Revvity) — the canonical answer; ACS conventions are built in. Strong on reaction schemes and supplementary information. Major friction now is the licensing model: institutional subscriptions and the discontinuation of perpetual licenses in early 2025 have pushed individual researchers and small labs to look elsewhere. Subscription pricing is not posted publicly; expect a multi-hundred-dollar annual figure for individuals.
• ChemDoodle 2D (iChemLabs) — capable, less expensive, and ships PNG/SVG export with adjustable bond length and line weight. The published price points (USD 29/month or 199/year, with a perpetual option) are a much smaller commitment than ChemDraw. Less common in pharma teams; perfectly viable for academic and individual use. ChemDoodle
• ChemSketch (ACD/Labs) — a generation of chemists drew their first structure in ChemSketch because the freeware version was unrestricted. ACD/Labs sunset the freeware product in early 2026 after the Revvity acquisition; the commercial ChemSketch product is still maintained. If you have an installed copy of the freeware, it still runs, but new installs are no longer available. ChemSketch

Web-native editors

• Ketcher (EPAM, open-source, Apache 2.0) — full-featured browser-based editor; SVG and PNG export; clean modern interface. Used as the editor underneath several integrated tools (including ChemStitch). Free, but on its own does not include report-style export presets — you adjust bond length and line weight per export. Ketcher
• MarvinSketch (ChemAxon) — free for academic use; commercial licensing required otherwise. Fast structure entry, good naming features, exports to most formats. The licensing distinction matters — manuscripts coming out of academic labs are fine; a startup using Marvin needs to verify license terms. MarvinSketch
• ChemStitch — web-native editor (Ketcher-based) with a publication export dialog that ships with the ACS 1996 preset built in (14.4 pt bonds, 10 pt Arial, 0.6 pt lines, white background, black bonds, regardless of the app’s dark-mode state). Custom controls let you override per-export. SVG and PNG at 300/450/600 DPI. Free 14-day trial.

Free single-purpose converters

• FreeChemDraw, Zoho ChemStudio, Chempirical SMILES→Structure — useful for one-off conversions or quick visualizations. Most do not give you bond-length / line-weight control or a publication preset. Adequate for slide decks; weak for manuscripts.

How to choose

The decision usually comes down to three questions.

• Is this for a manuscript or a report? Manuscripts → an editor with a journal-style preset (ChemDraw, ChemStitch) saves you from manually tuning bond length and line weight on every figure. Reports → any editor will do; pick on cost and access.
• Are you on Windows-only or cross-platform? Cross-platform → web-native (Ketcher, ChemStitch) avoids reinstall pain on a new machine. Windows-only → ChemDraw and ChemDoodle are fine and benefit from native EMF export into Word.
• Do you need to round-trip structures into other tools (database lookup, property prediction, retrosynthesis)? If so, choose an editor with SMILES / InChI / MOL / SDF support. SMILES export alone is enough for most lookup workflows; SDF matters if you handle batches.

The paste-and-edit workflow that actually works

Whatever tool you use, the workflow that holds up over a manuscript revision cycle:

1. Draw the structure in the editor with auto-cleanup applied. Verify wedge/dash bonds are on the right atoms.
2. Export to SVG (preferred) or PNG at 600 DPI. Use the journal’s preset if your editor has one; otherwise set bond length 14.4 pt and Arial 10 pt manually.
3. Insert the file into your document via “Insert → Picture” (Word) or \includegraphics (LaTeX). Do not paste from clipboard for raster formats — clipboard rasters often resample.
4. Save the editable source file (CDXML, MOL, or your editor’s native format) alongside the manuscript. Reviewers will ask for changes; without the source you redraw from scratch.
5. For supplementary information, include the SMILES or InChI alongside each structure. Other chemists will want to import the structure into their own tools without retyping it.

The fifth step is the one report writers skip and regret. Including SMILES with each compound in the supporting information is the difference between “another chemist can use this” and “another chemist has to retype every structure.” If you are also reporting yields and reagent ratios, our walkthrough on expressing reagent ratios as equivalents covers the formatting expectations for procedure write-ups.

Reaction schemes vs. single structures

A reaction scheme in a manuscript is held to slightly different conventions than a single structure: the arrow has a defined length, reagents above the arrow use a smaller font, and conditions below the arrow follow a stable order (reagent, solvent, temperature, time). Editors with a dedicated “reaction mode” (ChemDraw, ChemStitch) make this easier because the scheme is a structured object, not a loose collection of structures and arrows.

For multi-step schemes — the kind that show up in synthesis papers — consistency across panels is the visible quality marker. Use the same editor for every panel, the same bond length, the same atom-label font. Mixing tools across a single scheme is more obvious to reviewers than most authors realize.

Capturing the scheme is half the work; documenting the actual reaction setup is the other half. The limiting reagent calculation walkthrough covers how the reagent table relates to the scheme — the scheme tells the chemistry, the table tells the bench.