Molecules Submission Process
Molecules's submission process, first-decision timing, and the editorial checks that matter before peer review begins.
Senior Researcher, Oncology & Cell Biology
Author context
Specializes in manuscript preparation and peer review strategy for oncology and cell biology, with deep experience evaluating submissions to Nature Medicine, JCO, Cancer Cell, and Cell-family journals.
Readiness scan
Before you submit to Molecules, pressure-test the manuscript.
Run the Free Readiness Scan to catch the issues most likely to stop the paper before peer review.
Key numbers before you submit to Molecules
Acceptance rate, editorial speed, and cost context — the metrics that shape whether and how you submit.
What acceptance rate actually means here
- Molecules accepts roughly ~50-60% of submissions — but desk rejection runs higher.
- Scope misfit and framing problems drive most early rejections, not weak methodology.
- Papers that reach peer review face a different bar: novelty, rigor, and fit with the journal's editorial identity.
What to check before you upload
- Scope fit — does your paper address the exact problem this journal publishes on?
- Desk decisions are fast; scope problems surface within days.
- Open access publishing costs ~$2,100 CHF if you choose gold OA.
- Cover letter framing — editors use it to judge fit before reading the manuscript.
How to approach Molecules
Use the submission guide like a working checklist. The goal is to make fit, package completeness, and cover-letter framing obvious before you open the portal.
Stage | What to check |
|---|---|
1. Scope | Manuscript preparation |
2. Package | Submission via MDPI system |
3. Cover letter | Editorial assessment |
4. Final check | Peer review |
Quick answer: The Molecules submission process is usually less about fighting a brutally narrow scope and more about proving that the paper is complete, credible, and strong enough to deserve attention in a broad chemistry journal. The administrative steps are manageable. The harder question is whether the manuscript reads like a real advance or like a technically competent paper that still needs one more layer of evidence or positioning.
This guide explains what usually happens after upload, where papers slow down, and what to tighten before submission if you want a cleaner route to review.
The Molecules submission process usually moves through four practical stages:
- portal upload and technical checks
- editorial screening for novelty, completeness, and fit
- reviewer invitation and external review
- first decision after editor synthesis
The key stage is editorial screening. If the paper looks incremental, thin on validation, or too specialist without a clear reason to sit in a broad chemistry journal, the process becomes more fragile immediately.
Molecules: Key Metrics
Metric | Value |
|---|---|
Impact Factor (JCR 2024) | 4.2 |
Acceptance rate | ~45% |
Publisher | MDPI |
What happens right after upload
After submission, the first layer is administrative:
- manuscript and figure completeness
- declarations, authorship, and ethics items where relevant
- supplementary file availability
- cover letter and article-type selection
- basic formatting compliance
That part is not unusual. What matters is that a broad journal like Molecules relies on early editorial confidence. If the package looks incomplete or hard to audit, the file starts from a weaker place.
1. Is the novelty clear enough?
Editors do not need every paper to be a field-defining breakthrough, but they do need the advance to be explicit.
They are usually asking:
- what is actually new?
- is the gain meaningful or just incremental?
- would a chemistry reader understand the value quickly?
If the paper hides the novelty behind long setup or vague claims, the process weakens early.
2. Does the evidence package look complete?
Molecules handles a wide range of chemistry submissions, so completeness matters a lot. A paper does not need to be flashy if it is technically convincing, but it does need to look finished.
That often means:
- characterization is complete
- controls are present
- comparative context is clear
- claims match the strength of the data
Incomplete evidence is one of the fastest ways to make a reviewer request feel inevitable before review even begins.
3. Does the paper belong in a broad chemistry journal?
This is the hidden process question many authors miss. Some papers are technically solid but too narrow, too local, or too dependent on specialist context to work well in a broad journal.
Editors are usually judging whether the paper:
- can be understood outside a tiny niche
- makes a chemistry contribution with broad enough interest
- looks like a full journal article rather than a partial report
In our pre-submission review work
In our pre-submission review work, Molecules submissions usually need one more pass when:
- the manuscript is chemically competent but still reads like a narrow specialist paper with only a weak broad-chemistry case
- the novelty depends on wording more than one clean comparison with prior work
- the characterization package exists, but the editor still has to hunt for the exact data that proves the main claim
- the paper would make more immediate sense in a narrower medicinal, analytical, natural-products, or materials lane
Reviewer routing
Because the journal covers many chemistry areas, papers that are hard to place can take longer to route. A clearer introduction and better framing make reviewer assignment easier.
Overstated significance
Broad-scope journals punish hype more quickly than authors expect. If the manuscript oversells a moderate advance, reviewers often push back hard on framing.
Weak comparison with prior work
If the manuscript does not show why this result is better, different, or more useful than the literature, the process slows because reviewers have to do the positioning work themselves.
Make the novelty claim easy to quote
A strong Molecules submission should let an editor summarize the contribution in one sentence. If the editor cannot do that, the paper is harder to route and defend.
Audit the completeness of the chemistry
Before submission, ask:
- would a skeptical reviewer say the characterization is enough?
- are the controls and comparative baselines visible?
- does the manuscript explain why the result matters?
- are the limits acknowledged honestly?
This is usually a better use of time than more cosmetic language polishing.
Write for a broader chemistry audience
Even if the paper comes from a specialist corner of chemistry, the manuscript should explain the significance without assuming too much local knowledge. That does not mean oversimplifying the science. It means making the contribution legible to an editor who sees many chemistry subfields.
What the editor wants to believe before sending the paper out
Before a Molecules paper goes to reviewers, the editor usually wants to believe:
- the advance is real and easy to state
- the evidence package is complete enough to survive technical scrutiny
- the paper belongs in a broad chemistry venue rather than a very narrow niche title
- the manuscript is finished enough that review will test the science, not rebuild the package
That last point matters more than many authors expect. Editors are often deciding whether the paper will generate a productive review cycle or just an expensive list of missing items. The more review-ready the manuscript looks, the easier that decision becomes.
Common process mistakes
The most common process mistakes are not usually exotic. They are usually things like:
- novelty claims that are too vague to defend quickly
- characterization that is technically present but hard to audit
- weak comparison with the literature
- conclusions that promise broader significance than the data really shows
- introductions written for a tiny specialist audience even though the journal is broad
These problems do not always kill a paper, but they do slow the process by making reviewer skepticism more likely.
Another common mistake is treating the broad scope as a sign that the paper can stay loosely framed. In practice, broad journals often need sharper framing, not weaker framing, because the editor must understand quickly why this chemistry is worth reviewer time.
A final pre-submit check
Before upload, try a quick editorial test:
- Can you state the advance in one sentence?
- Can you point to the exact data that proves it?
- Can a broad chemistry editor understand why the result matters?
- Would the paper still look worthwhile if you removed the strongest hype language?
If the answer to any of those is shaky, the process is likely to feel rougher than it needs to.
That final check is especially useful for Molecules because the journal handles many adjacent chemistry areas. A paper that seems obvious inside one niche can still feel unclear to an editor who is reading across medicinal chemistry, natural products, analytical chemistry, and chemical biology in the same day.
Readiness check
Run the scan while Molecules's requirements are in front of you.
See how this manuscript scores against Molecules's requirements before you submit.
Final checklist before upload
Use this quick last-pass checklist:
- the novelty sentence appears clearly in the abstract and introduction
- the supporting information is complete and easy to audit
- the controls and comparisons are visible, not hidden
- the title and conclusion do not overstate significance
- the paper reads well to a broad chemistry audience, not only a narrow subfield
If that checklist is already true, the Molecules submission process usually feels much less fragile.
A quick process table
Stage | What usually happens | Main risk |
|---|---|---|
Upload and admin check | Files and declarations reviewed | Incomplete package |
Editorial screening | Novelty, completeness, and broad fit judged | Incremental or narrow framing |
Reviewer invitation | Appropriate chemistry reviewers are selected | Slow routing if contribution is unclear |
External review and first decision | Reviewers test novelty, evidence, and positioning | Major revision if evidence or framing is thin |
Submit if
- the novelty is clear in one or two sentences
- the chemistry package is complete and review-ready
- the manuscript can speak to a broad chemistry audience
- the comparative context with the literature is already strong
Think twice if
- the paper is technically decent but clearly incremental
- the evidence package still feels patchy
- the manuscript depends on specialist context to make sense
- the significance claim is carrying more weight than the data
Where to go next
- If you are still deciding whether Molecules is the right journal, start with the Molecules journal page.
- If you want a broader fit decision before you upload, use How to Choose the Right Journal for Your Paper.
- If your bigger concern is early editorial rejection, read Desk Rejection: What It Means, Why It Happens, and What to Do Next.
Before you upload, run your manuscript through a Molecules submission readiness check to catch the issues editors filter for on first read.
Frequently asked questions
Submit through the MDPI Submission System. The manuscript must prove it is complete, credible, and strong enough to deserve attention in a broad chemistry journal.
Molecules follows MDPI editorial timelines with typically fast processing. The administrative steps are manageable when the paper demonstrates a real advance.
Molecules screens for completeness, credibility, and whether the paper represents a real advance. Technically competent papers that still need one more layer of evidence or positioning face early rejection.
After upload to the MDPI system, editors assess whether the manuscript reads like a real advance or a technically competent paper that still needs improvement. The process is less about scope and more about proving the paper is complete and credible.
Sources
- Molecules journal homepage, MDPI.
- Molecules instructions for authors, MDPI.
- MDPI editorial process, MDPI.
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