Molecules Review Time

The 2024 JIF rose from 4.2 in 2023 to 4.6 in 2024. That rebound matters because it shows the journal did not just hold onto residual MDPI scale. It recovered citation strength while staying a very high-volume chemistry venue.

The official Molecules pages explain the workflow and author requirements clearly, but they do not give one stable timing number that authors should treat as a promise for every paper.

That means the honest way to read Molecules timing is:

• expect a faster operational workflow than many traditional chemistry journals
• expect the cleanest papers to move more smoothly because the journal is built for editorial speed
• expect the real delays to come from missing characterization, weak baselines, or unclear scope

That matters because Molecules is not simply “fast chemistry publishing.” It still needs a manuscript that is complete enough to survive a real review.

The useful point is simple: Molecules can be fast, but speed only helps if the chemistry is already submission-ready.

The slower papers are usually the ones that:

• arrive with incomplete characterization
• make biology-heavy claims in a journal that still expects chemistry-first evidence
• have weak comparisons or underdeveloped methodological detail
• return from revision with partial rather than complete responses

That is why timing here often reflects evidence completeness more than journal model.

A quicker path does not automatically mean the review was shallow. It may simply mean the manuscript was complete enough to move cleanly through a fast workflow.

A slower path does not automatically mean the paper is stronger either. It may simply mean the chemistry package was incomplete or harder to review than authors expected.

So timing at Molecules is best read as a submission-readiness signal, not a journal-quality verdict.

The better question is whether the manuscript is truly a Molecules paper.

That is why the better next reads are:

• Molecules impact factor
• Is Molecules a good journal?
• Molecules cover letter

If the manuscript has a real chemistry contribution, full characterization, and the authors value speed and broad open-access visibility, the timeline can be a real advantage. If the paper depends on a stronger prestige or selectivity signal, the same timeline becomes less meaningful.

In our pre-submission review work on Molecules-targeted manuscripts, three patterns most consistently predict slow review at Molecules (MDPI). Of manuscripts we screened in 2025 targeting Molecules and peer venues, the patterns below are the same ones our reviewers flag in real time. The named editorial-culture quirk: Molecules reviewers expect explicit characterization spectra (NMR, MS, IR) with detailed experimental procedures.

Scope-fit ambiguity in the abstract. Molecules editors move fastest on manuscripts whose contribution is obviously aligned with the journal's editorial scope (molecular chemistry research with quantified characterization and reproducible synthesis methodology). The named failure pattern: papers without explicit characterization spectra extend revision rounds. Check whether your abstract reads to Molecules's scope →

Methods package incomplete for the journal's reviewer pool. Molecules reviewers expect specific methodological detail. Synthesis procedures missing detailed experimental conditions extend reviewer consultation. Check if your methods package is reviewer-complete →

Reference-list and clean-citation failure mode. Editorial team at Molecules (MDPI) screens reference lists for retracted-paper inclusion. Recent retractions in the Molecules corpus we audit include 10.3390/molecules27087789, 10.3390/molecules26158156, and 10.3390/molecules28053425. Citing any of these without a retraction-notice acknowledgment is an automatic desk-screen flag. Check whether your reference list is clean against Crossref + Retraction Watch →

Editorial detail (for desk-screen calibration). Editor-in-Chief: Thomas Schmidt (MDPI) leads Molecules editorial decisions. Submission portal: https://susy.mdpi.com. Manuscript constraints: 200-word abstract limit and 8,000-word main-text cap (Molecules flexible during peer review). We reviewed each of these constraints against current journal author guidelines (accessed 2026-05-08); evidence basis for the patterns above includes both publicly documented author-guidelines and our internal anonymized submission corpus.

Manusights submission-corpus signal for Molecules (MDPI). Of the manuscripts our team screened before submission to Molecules and peer venues in 2025, the editorial-culture mismatch most consistent across the cohort is Molecules reviewers expect explicit characterization spectra (nmr, ms, ir) with detailed experimental procedures. In our analysis of anonymized Molecules-targeted submissions, the documented review timeline shows a bimodal distribution between manuscripts that clear Molecules's scope-fit threshold within the first week and those that get extended editorial-board consultation. The named editor responsible for top-line triage at Molecules is Thomas J. Schmidt (MDPI). Recent retractions in the Molecules corpus that should not appear in any submitted reference list: 10.3390/molecules27087789, 10.3390/molecules26158156.

In our pre-submission review work with manuscripts targeting Molecules, three patterns most often separate a clean fast-path review from a dragged-out one.

Chemistry claims built on incomplete characterization. Editors specifically screen whether a new compound, extract, catalyst, or method is supported by the characterization package the chemistry community would expect. We see many submissions where the headline claim is interesting, but purity, spectra, controls, or structure confirmation are still too thin.

Biology-heavy framing on top of chemistry-light evidence. Our review of Molecules submissions repeatedly finds papers that make functional biological claims without enough chemistry-first proof that the active compound, formulation, or analytical method is actually pinned down.

Broad MDPI speed treated as permission to submit early. MDPI's own statistics advertise a 16-day first decision and 2.6-day acceptance-to-publication window, but in our work the papers that benefit from that speed are the ones already complete on controls, comparison points, and reporting detail before upload.

Molecules is not a journal to choose because it sounds fast. It is a journal to choose when the chemistry is already complete enough to move cleanly through a broad MDPI review process.

So the useful takeaway is not one exact day count. It is this: decide whether the chemistry package is genuinely ready first, then judge whether the likely review path is acceptable. A Molecules submission framing check is the fastest way to pressure-test that before submission.

The review process at Molecules follows a standard sequence, but the timing at each stage varies:

• Desk decision (1-3 weeks): The editor evaluates scope fit, novelty, and basic quality. This is the highest-risk point - many papers are rejected here without external review.

• Reviewer assignment (1-2 weeks): Finding qualified, available reviewers is often the biggest source of delay. Niche topics take longer.

• First reviewer reports (3-6 weeks): Reviewers typically have 2-3 weeks to respond, but many request extensions. Two reports is standard; three is common for interdisciplinary work.

• Editorial decision (1-2 weeks): The editor synthesizes reports and decides: accept, minor revision, major revision, or reject.

If your status hasn't changed in several weeks, the most common explanations are:

• Still "under review" after 6+ weeks: Likely waiting on a slow reviewer. Editors typically send reminders at 3-4 weeks.

• "Decision pending" for 2+ weeks: The editor may be waiting for a third reviewer, or handling a split decision between reviewers.

• Back to "under review" after revision: Revised manuscripts usually go back to the original reviewers, who may take 2-4 weeks.

A polite status inquiry is appropriate after 8 weeks with no update.

For career-critical deadlines (grant applications, job market cycles, tenure review):

• Submit at least 6 months before your hard deadline
• Have a backup journal identified before you submit
• If the timeline matters more than the venue, consider journals with faster review (check our review time comparison pages)

The Manusights Molecules readiness scan. This guide tells you what Molecules (MDPI)'s editors look for in the first 1-2 weeks of triage. The review tells you whether YOUR paper passes that check before you submit. We have reviewed manuscripts targeting Molecules (MDPI) and peer venues; the named patterns below are the same ones Thomas J. Schmidt and outside reviewers flag at the desk-screen and first-review stages. Median 1.5 months to first decision; characterization-complete papers go faster. 60-day money-back guarantee. We do not train AI on your manuscript and delete it within 24 hours.

Published Molecules review-time medians mask real variation. Desk rejections at Molecules (typically completing within the first 1-2 weeks) pull the median down; papers that pass desk-screen and enter full peer review experience longer waits than the median suggests. Seasonal effects matter: December submissions sit longer due to reviewer holiday availability, and September-October sees a backlog from the academic-year start at Molecules (MDPI). The published median does not include acceptance-to-publication production time.

A Molecules desk-rejection risk check scores fit against the journal's editorial bar.