CAS number：217817-01-1 molecular formula：C20H32O8S
Tos-PEG4-t-butyl ester is a PEG derivative containing a t-butyl ester and a tosyl group. The hydrophilic PEG spacer increases solubility in aqueous media. The t-butyl protected carboxyl group can be deprotected under acidic conditions. The tosyl group is a very good leaving group for nucleophilic substitution reactions.
| Chinese alias | - | ||
| English alias | 3-(2-{2-[2-(Toluene-4-sulfonyloxy)-ethoxy]-ethoxy}-ethoxy)-propionic acid tert-butyl ester | 1,1-Dimethylethyl 3-[2-[2-[2-[[(4-methylphenyl)sulfonyl]oxy]ethoxy]ethoxy]ethoxy]propanoate | tert-butyl 3-[2-[2-[2-(4-methylphenyl)sulfonyloxyethoxy]ethoxy]ethox | ||
| CAS number | 217817-01-1 | molecular formula | C20H32O8S |
| molecular weight | 432.53 g/mol | Exact mass | ≥98% |
| PSA | 106.000 Ų | logp | 1.900 |
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