Term: asymmetric photochemistry https://doi.org/10.1351/goldbook.AT07328 Definition: Photochemical process leading to a chiral substance from an achiral precursor such that one enantiomer predominates over the other. Note: @A00483@ may be achieved by the use of @C01057@ reagents, a @C01057@ environment, or circularly polarized light. Related Terms: 1) asymmetric induction (http://doi.org/10.1351/goldbook.A00483). 2) chiral (http://doi.org/10.1351/goldbook.C01057). 3) achiral (http://doi.org/10.1351/goldbook.A00069). 4) enantiomer (http://doi.org/10.1351/goldbook.E02069). Source: PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 304 (https://doi.org/10.1351/pac200779030293) Citation: 'asymmetric photochemistry' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.AT07328 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. 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.