This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Roberts reaktion.svg de Markierungsreaktion von Roberts zum Beweis der Existenz von Arinen en marker reaction to prove existence of arynes own Bert Kilanowski Arynes cczero Uploaded with
Page 2023 Free-images.com. All images are Public Domain