Fukuda, Tsunehiko et al. published their research in Chemical & Pharmaceutical Bulletin in 1982 | CAS: 63624-28-2

2,4-Dimethoxybenzene-1-sulfonyl chloride (cas: 63624-28-2) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Application of 63624-28-2

New protecting groups for the indole ring of tryptophan in peptide synthesis: 2,4,6-trimethoxybenzenesulfonyl and 4-methoxy-2,3,6-trimethylbenzenesulfonyl groups was written by Fukuda, Tsunehiko;Wakimasu, Mitsuhiro;Kobayashi, Shigeru;Fujino, Masahiko. And the article was included in Chemical & Pharmaceutical Bulletin in 1982.Application of 63624-28-2 This article mentions the following:

The title groups (Mtb and Mtr, resp.) and 2,4-RR1C6H3SO2 (R = H, R1 = Me, MeO; R = R1 = MeO) were introduced at the Nin of tryptophan, and their protective group properties were studied. Thus, Boc-Trp-OCH2Ph (Boc = Me3CO2C) was treated with R2Cl (R2 = Mtb, Mtr) to give Boc-Trp(R2)-OCH2Ph, which was saponified to give Boc-Trp(R2)-OH. Mtb and Mtr were stable to CF3CO2H, but they can be removed by HF or MeSO3H; these groups suppress decomposition and modification of the tryptophan residue during peptide synthesis. The Mtb and Mtr groups were used for the protection of the indole ring in the synthesis of pyro-Glu-Gln-Arg-Leu-Gly-Asn-Gln-Trp-Ala-Val-Gly-His-Leu-Met-NH2 (bombesin) and LH-releasing hormone analog pyroGlu-His-Trp-Ser-Tyr-D-Leu-Leu-Arg-Pro-NHEt by solution methods and the preparation of H-Tyr-Gly-Gly-Phe-Leu-Arg-Arg-Ile-Arg-Pro-Lys-Leu-Lys-Trp-Asp-Asn-Gln-OH (dynorphin) by the solid-phase method. In the experiment, the researchers used many compounds, for example, 2,4-Dimethoxybenzene-1-sulfonyl chloride (cas: 63624-28-2Application of 63624-28-2).

2,4-Dimethoxybenzene-1-sulfonyl chloride (cas: 63624-28-2) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Application of 63624-28-2

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics