The considerable photostability improvement of photochromic terarylene by sulfone group was written by Jeong, Yong-Chul;Gao, Chunji;Lee, In Su;Yang, Sung Ik;Ahn, Kwang-Hyun. And the article was included in Tetrahedron Letters in 2009.HPLC of Formula: 10243-15-9 This article mentions the following:
A photochromic terarylene benzothiophene derivative which has a sulfone group on the upper benzothiophene ring is readily synthesized using Suzuki coupling reaction. It exhibits good photochromic properties. Interestingly, the closed form of this benzothiophene dioxide compound shows a good photostability as well as a thermal stability compared with its reduced analog, that provides a method to enhance the photostability of versatile photochromic terarylenes under UV. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9HPLC of Formula: 10243-15-9).
3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) belongs to benzothiophene derivatives. Benzothiophenes are valuable heterocycles that are widely used in medicines, agrochemicals, and materials science. Due to its aromaticity, thiophenes do not exhibit the same properties as conventional thioethers.HPLC of Formula: 10243-15-9
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem