Specific target organ toxicity, single exposure;Respiratory tract irritation
Category 3
Warning
Precautionary statements:
P261
Avoid breathing dust/fume/gas/mist/vapours/spray.
P305+P351+P338
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
Description
Tos-PEG6-t-Butyl ester is a PEG linker 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.