What Is the ACS Chemical Biology Journal Impact Factor in 2025?

Researchers and students looking for the latest metrics for this journal want a clear number. The ACS Chemical Biology journal impact factor for 2025 is not yet available, as Clarivate typically releases the Journal Citation Reports (JCR) in June of each year. The most recent confirmed figure is the 2023 impact factor of 3.5, which was published in mid-2024. For the 2025 value, you will need to check the official JCR release in June 2025.

Understanding the Impact Factor and Its Timeline

The impact factor measures the average number of citations received by articles published in a journal over a specific two-year window. For ACS Chemical Biology, the 2023 impact factor of 3.5 means that articles published in 2021 and 2022 were cited an average of 3.5 times in 2023.

The 2025 impact factor will be calculated using citations from 2023 and 2024 to articles published in 2023 and 2024. This lag is standard, and the number is always retrospective. If you need the most current metric for grant applications or tenure files, the 2023 value is the official one to use until the 2024 figure is released in mid-2025.

You can find the official impact factor and other journal metrics on the Clarivate website Clarivate or directly on the journal’s homepage at ACS Publications ACS Publications.

Why the Number Changed from 4.0 to 3.5

The journal’s impact factor has fluctuated. It was 4.0 for 2022, then dropped to 3.5 for 2023. This is not unusual for specialized journals. A single highly cited article or a shift in the field’s publishing patterns can cause a year-to-year change. The 3.5 figure still places the journal in a strong position within the multidisciplinary chemistry category.

What the Journal Publishes

ACS Chemical Biology covers research at the interface of chemistry and biology. It has been published since 2006 by the American Chemical Society Wikipedia — ACS Chemical Biology. The journal accepts several types of content, each with its own scope and length limits.

• Research Letters: Short reports of findings with broad interest, typically five printed pages or fewer.
• Articles: Full-length papers that present a complete study, up to twelve printed pages.
• Reviews and Perspectives: Cover key concepts or emerging directions in chemical biology for a broad readership.

The journal also publishes specially commissioned articles that describe new directions in the field. A notable feature is that it was the first to publish three-dimensional interactive chemical structures that replicate printed journal figures, allowing readers to manipulate molecules online.

Who Runs the Journal

The founding editor-in-chief was Laura L. Kiessling from the Massachusetts Institute of Technology. Since January 2022, the editor-in-chief has been Chuan He from the University of Chicago. The journal is peer-reviewed and published monthly.

How the Impact Factor Is Calculated for ACS Chemical Biology

The impact factor is a straightforward ratio. For a given year, Clarivate counts the number of citations received in that year to articles published in the journal during the two preceding years. That number is divided by the total number of citable items (articles and reviews) published in those two years.

To see how this works for ACS Chemical Biology, consider the 2023 impact factor of 3.5. In 2023, articles and reviews published in the journal during 2021 and 2022 received roughly 3.5 citations each on average. If the journal published 200 citable items in 2021 and 2022 combined, those items would have received about 700 citations in 2023 to yield that 3.5 figure.

Citations can come from any source indexed in the Web of Science core collection, including other journals, conference proceedings, and book series. A single highly cited paper can pull the average up noticeably, especially for a specialized journal with a smaller total article count. This is why impact factors can shift from year to year without signaling a change in journal quality.

What Counts as a Citable Item

Clarivate counts only original research articles and reviews as citable items. Editorials, letters to the editor, corrections, and news items are not included in the denominator, though citations to them still count in the numerator. This distinction matters because a journal that publishes many editorials might have a higher impact factor than one that publishes the same number of articles but fewer non-citable items.

For ACS Chemical Biology, the journal publishes research letters, articles, reviews, and perspectives. Letters and articles are citable items. Perspectives may or may not be classified as reviews depending on their content. The journal’s editorial team works to ensure that each issue contains a balance of these content types.

Alternative Metrics to Consider

The impact factor is the most widely known journal metric, but it is not the only one. Researchers evaluating where to submit their work or cite for a literature review may find other numbers more useful.

• 5-Year Impact Factor: This metric uses a five-year citation window instead of two. It can be more stable for journals where articles take longer to accumulate citations. ACS Chemical Biology’s 5-year impact factor is typically close to its 2-year value, reflecting steady citation behavior.
• Immediacy Index: This measures how quickly articles in a journal are cited in the same year they are published. It is a measure of publication speed and topical urgency. For a monthly journal like ACS Chemical Biology, the immediacy index is usually lower than the impact factor.
• Eigenfactor Score: This metric weights citations based on the prestige of the citing journal. A citation from a high-impact journal counts more than one from a lower-impact journal. It also accounts for how often a journal is cited by other highly cited journals.
• Article Influence Score: This is the Eigenfactor score divided by the number of articles in the journal. It gives a per-article measure of influence. For ACS Chemical Biology, the Article Influence Score is typically above 1.0, meaning its articles have above-average influence compared to other journals in the same field.

These metrics are all available through the Journal Citation Reports. If you are comparing journals for a specific project, looking at the full set of metrics gives a clearer picture than relying on the impact factor alone.

Key Takeaways

• The confirmed impact factor for ACS Chemical Biology is 3.5 (2023 data).
• The 2025 impact factor will be released by Clarivate in June 2025.
• The journal covers research at the chemistry-biology interface, publishing letters, articles, reviews, and perspectives.
• It is a well-established, peer-reviewed journal from the American Chemical Society, with an editor-in-chief from the University of Chicago.