ACS In-text Citation Generator: Superscript, Numbered & Author-Date

Create ACS in-text citations as superscript numbers, italic numeric anchors, or author-date citations, then match them to a complete ACS reference-list entry.

ACS citation style is commonly used in chemistry and related scientific fields. This page focuses on one practical part of building ACS references.

  • Last reviewed: July 26, 2026
  • Based on the ACS Guide to Scholarly Communication
  • Includes journal articles, patents, books, websites, and preprints
  • Not affiliated with the American Chemical Society
Superscript Number in the sentence This reaction pathway was reported for nickel catalysts.1 Use when ACS numbered citations should appear as compact superscript anchors.
Author-date Surname and year This reaction pathway was reported for nickel catalysts (Whitesides, 2006). Use when a course, journal, or department asks for ACS author-date citations.
Numeric anchors Italic number in parentheses This reaction pathway was reported for nickel catalysts (1). Use when numbered ACS citations need parenthetical anchors instead of superscripts.
Combine in-text citations

Reference List Citation

Example result previewWhitesides, G. M. The Origins and the Future of Microfluidics. Nature 2006, 442, 368-373. https://doi.org/10.1038/nature05058.

In-text Citation

Export settings

RTF opens in Word/Pages; TXT is for quick viewing; BibTeX/RIS are for Zotero, EndNote, Mendeley, and other reference managers.

Citation List

Saved citations will appear here and stay in this browser.

    How ACS in-text citations work

    ACS supports three in-text citation modes: superscript numbers, italic numbers in parentheses, and author-date citations. The correct option depends on the journal, professor, or department requirement.

    Copyable ACS in-text citation examples

    Superscript
    Nickel catalysts can favor the same reaction pathway under mild conditions.¹
    Italic number
    Nickel catalysts can favor the same reaction pathway under mild conditions (1).
    Author-date
    Nickel catalysts can favor the same reaction pathway under mild conditions (Whitesides, 2006).

    Required fields for ACS in-text citations

    • Citation number or first author surname.
    • Publication year when using author-date mode.
    • A matching full reference-list entry for every in-text marker.
    • One consistent mode throughout the paper unless the assignment explicitly asks otherwise.

    ACS in-text format examples

    Compare the three common ACS in-text formats before copying: superscript numbers for compact numbered citations, author-date citations for surname-year requirements, and numeric anchors in parentheses for assignments that do not want superscripts.

    Numbered ACS citations

    Numbered ACS citations connect a number in the sentence to the matching reference-list entry. ACS numbered citations can appear as superscript numbers or as italic numbers in parentheses, so check which numbered form your course or journal wants.

    Superscript ACS citations

    Superscript numbers are compact and common in chemistry writing. The number points readers to the matching reference list entry.

    Italic numbers in parentheses

    Some ACS assignments use italic numbers in parentheses instead of superscript numbers. Keep one style consistent throughout the paper.

    Author-date ACS citations

    Author-date ACS citations include the first author surname and year, which can be useful when an instructor asks for a name-year style.

    Superscript vs author-date confusion

    Do not mix superscript numbered citations with author-date citations in the same paper unless the assignment explicitly asks for both. If your prompt says ACS numbered citation, start with superscript or italic-number mode; if it says author-date, use the surname-year output.

    Common ACS in-text citation mistakes

    • Using superscript numbers in one paragraph and author-date citations in another.
    • Adding an in-text marker that has no matching ACS reference-list entry.
    • Renumbering citations after revisions but leaving the reference list in the old order.
    • Treating ACS in-text citation rules as identical to APA without checking the course or journal requirement.

    Manual review before submission

    Use this generator as a formatting draft. Before submission, compare the selected in-text mode with your instructor, department, or target journal instructions and verify every marker points to the right full reference.

    Back to the ACS reference generator

    After choosing the in-text mode, use the main ACS citation generator to create the matching reference-list entry for the same source.

    ACS citation format pathways

    Use these existing pages together instead of guessing from one generic citation format.

    ACS citation generatorGenerate a source-specific ACS reference, copy the in-text citation, and save the entry before exporting.ACS citation examplesCompare ACS citation format for journal articles, patents, websites, books, preprints, datasets, and in-text styles.ACS reference list generatorBuild a complete ACS reference list, keep citation numbering aligned, and export RTF, TXT, BibTeX, or RIS.ACS DOI citation generatorPaste a DOI, review Crossref metadata, and clean up journal article, dataset, or preprint details.ACS journal article citation generatorFormat journal abbreviation, year, volume, pages, issue details, DOI URL, and matching in-text output.ACS patent citation generatorCapture inventor, patent number, assignee, patent office, publication date, and URL for chemistry patents.RSC citation generatorCompare Royal Society of Chemistry formatting when an assignment or target journal asks for RSC instead of ACS.

    Related ACS citation tools

    Use these related ACS citation pages to build a complete chemistry reference list and keep your in-text citations consistent.

    ACS GeneratorReference ListExamplesJournal ArticleDOIPatent

    Chemistry citation workflows

    Use these internal pathways when you are moving from a single source citation to a complete ACS reference list.

    Find the right ACS source typeCompare journal, patent, website, book, preprint, dataset, and in-text citation examples before choosing a generator tab.Import DOI metadataUse DOI details from Crossref when a chemistry article, preprint, or dataset has a persistent identifier.Build a reference listAdd multiple ACS references locally in your browser and export the list as RTF, TXT, BibTeX, or RIS.Check citations before submissionRequest citation-formatting support for ACS references, DOI links, patent fields, and consistency checks.

    ACS citation guides

    These focused guides answer long-tail ACS citation questions and link back to the matching generator when you are ready to format a reference.

    How to cite a patent in ACS styleA step-by-step ACS patent citation guide for inventors, assignees, patent numbers, dates, and URLs.How to cite a website in ACS styleLearn when to include author, page title, website name, URL, and access date for ACS web references.ACS journal article citation formatA focused guide to ACS journal article references, journal abbreviations, volume, pages, and DOI links.ACS DOI citation guideUse DOI metadata carefully for journal articles, datasets, preprints, and chemistry sources.ACS reference list cleanup checklistCheck source types, DOI links, journal abbreviations, patent fields, and in-text citation consistency.

    ACS citation tools

    ACS GeneratorJournal ArticlePatentWebsiteBookConference PaperThesisPreprintDOIIn-text CitationReference ListExamplesACS vs APA

    Sources and method

    Citation examples are maintained from public ACS citation patterns and checked against authoritative identifier and metadata sources. Always follow the final requirements from your instructor, department, or target journal.

    Editorial review

    Last reviewed: July 26, 2026. Chem Citation Tools is an independent educational project for chemistry citation workflows. The site is not affiliated with the American Chemical Society, and generated citations should be reviewed before academic or journal submission.

    FAQ

    What is ACS citation style?
    ACS citation style is a reference format commonly used in chemistry and related scientific fields.
    Does ACS use numbered citations?
    Yes. ACS style can use numbered in-text citations, including superscript numbers or italic numbers in parentheses.
    How do I cite a patent in ACS?
    An ACS patent citation usually includes the inventor, patent title, patent number, assignee, and publication date. See the ACS patent citation generator for the dedicated fields.
    Can this page generate journal article citations?
    Yes. The embedded tool can generate reference list entries and in-text citations.