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Tos-PEG4-t-butyl ester - 98%, high purity , CAS No.217817-01-1
Basic Description Synonyms 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 Specifications & Purity 98% Storage Temp Store at -20°C Shipped In Ice chest + Ice pads Product Description 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.
Names and Identifiers IUPAC Name tert-butyl 3-[2-[2-[2-(4-methylphenyl)sulfonyloxyethoxy]ethoxy]ethoxy]propanoate INCHI InChI=1S/C20H32O8S/c1-17-5-7-18(8-6-17)29(22,23)27-16-15-26-14-13-25-12-11-24-10-9-19(21)28-20(2,3)4/h5-8H,9-16H2,1-4H3 InChi Key AAQWIVKRAHBPDM-UHFFFAOYSA-N Canonical SMILES CC1=CC=C(C=C1)S(=O)(=O)OCCOCCOCCOCCC(=O)OC(C)(C)C Isomeric SMILES CC1=CC=C(C=C1)S(=O)(=O)OCCOCCOCCOCCC(=O)OC(C)(C)C PubChem CID 60146205 Molecular Weight 432.53
Safety and Hazards(GHS) Pictogram(s) GHS07 Signal Warning Hazard Statements H315: Causes skin irritation
H319: Causes serious eye irritation
H335: May cause respiratory irritation
Precautionary Statements P261: Avoid breathing dust/fume/gas/mist/vapors/spray.
P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do - continue rinsing.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352: IF ON SKIN: wash with plenty of water.
P321: Specific treatment (see ... on this label).
P405: Store locked up.
P501: Dispose of contents/container to ...
P264: Wash hands [and …] thoroughly after handling.
P271: Use only outdoors or in a well-ventilated area.
P304+P340: IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P403+P233: Store in a well-ventilated place. Keep container tightly closed.
P362+P364: Take off contaminated clothing and wash it before reuse.
P264+P265: Wash hands [and …] thoroughly after handling. Do not touch eyes.
P337+P317: If eye irritation persists: Get medical help.
P332+P317: If skin irritation occurs: Get medical help.
P319: Get medical help if you feel unwell.
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