Title: steroid 21-monooxygenase Long Title: IUPAC Gold Book - steroid 21-monooxygenase DOI: 10.1351/goldbook.11260 Status: current Definition Member (EC 1.14.14.16) of the cytochrome P450 family of enzymes required for the synthesis of some steroid hormones including aldosterone and cortisol. Related Terms - hormones: https://goldbook.iupac.org//terms/view/10810 - steroid: https://goldbook.iupac.org//terms/view/11259 Source - PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 809 (https://doi.org/10.1515/pac-2015-1202) Other Outputs - html: https://goldbook.iupac.org/terms/view/11260/html - json: https://goldbook.iupac.org/terms/view/11260/json - xml: https://goldbook.iupac.org/terms/view/11260/xml Citation: Citation: 'steroid 21-monooxygenase' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.11260 License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. Collection: If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. Accessed: 2026-08-04T14:39:04+00:00