Chaikovski, V. K. et al. published their research in Izvestiya Vysshikh Uchebnykh Zavedenii, Khimiya i Khimicheskaya Tekhnologiya in 2002 | CAS: 3268-21-1

1,4-Diiodo-2,3,5,6-tetramethylbenzene (cas: 3268-21-1) belongs to iodide derivatives. Organoiodine compounds occur widely in organic chemistry, but are relatively rare in nature. Iodo alkanes participate in a variety of organic synthesis reactions, which include the Simmons–Smith reaction (cyclopropanation using iodomethane), Williamson ether synthesis, Wittig reaction, Grignard reaction, alkyl coupling reactions, and Wurtz reaction.HPLC of Formula: 3268-21-1

Iodination of aromatic compounds by N-iodosuccinimide in organic solvents in the presence of H2SO4 was written by Chaikovski, V. K.;Filimonov, V. D.;Skorokhodov, V. I.. And the article was included in Izvestiya Vysshikh Uchebnykh Zavedenii, Khimiya i Khimicheskaya Tekhnologiya in 2002.HPLC of Formula: 3268-21-1 This article mentions the following:

N-iodosuccinimide in organic solvents in the presence of small amounts of H2SO4 easily iodinates alkylbenzenes, arylamines, phenols and some polycyclic hydrocarbons with high yields of products at 0-20°. In the experiment, the researchers used many compounds, for example, 1,4-Diiodo-2,3,5,6-tetramethylbenzene (cas: 3268-21-1HPLC of Formula: 3268-21-1).

1,4-Diiodo-2,3,5,6-tetramethylbenzene (cas: 3268-21-1) belongs to iodide derivatives. Organoiodine compounds occur widely in organic chemistry, but are relatively rare in nature. Iodo alkanes participate in a variety of organic synthesis reactions, which include the Simmons–Smith reaction (cyclopropanation using iodomethane), Williamson ether synthesis, Wittig reaction, Grignard reaction, alkyl coupling reactions, and Wurtz reaction.HPLC of Formula: 3268-21-1

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com