217817-01-1

Basic information

• Product Name: Tos-PEG4-t-butyl ester
• Synonyms: Tos-PEG4-t-butyl ester;Tos-PEG3-CH2CH2COOtBu
• CAS NO: 217817-01-1
• Molecular Formula: C₂₀H₃₂O₈S
• Molecular Weight: 432.52828
• Mol File: 217817-01-1.mol
• Article Data: 29

Chemical Properties

• Boiling Point: 528.5±45.0 °C(Predicted)
• Appearance: /
• Density: 1.154±0.06 g/cm3(Predicted)
• Storage Temp.: 2-8°C
• CAS DataBase Reference: Tos-PEG4-t-butyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Tos-PEG4-t-butyl ester(217817-01-1)
• EPA Substance Registry System: Tos-PEG4-t-butyl ester(217817-01-1)

Safety Data

• Hazardous Substances Data: 217817-01-1(Hazardous Substances Data)

Usage

Description

Tos-PEG4-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.

Upstream product

• 1663-39-4 tert-Butyl acrylate 
• 112-27-6 2,2'-[1,2-ethanediylbis(oxy)]bisethanol 
• 104-15-4 toluene-4-sulfonic acid 
• 186020-66-6 3-{2-[2-(2-hydroxy-ethoxy)-ethoxy]-ethoxy}-propionic acid tert-butyl ester 
• 98-59-9 p-toluenesulfonyl chloride 

Downstream Products

• 935272-06-3 1,4-diiodo-2,5-bis(11-carboxy-3,6,9-trioxaundecyloxy)benzene 
• 1274917-84-8 1,4-diiodo-2,5-bis(11-(tert-butoxycarbonyl)-3,6,9-trioxaundecyloxy)benzene 
• 1274917-81-5 C₃₆H₅₄O₁₂ 
• 1274917-85-9 C₄₂H₇₀O₁₂Si₂ 
• 1814901-03-5 aminobis(4,7,10-trioxadodecanoic acid tert-butyl ester) 
• 1610796-02-5 2,5-dioxopyrrolidin-1-yl 3-(2-(2-(2-azidoethoxy)ethoxy)ethoxy)propanoate 

Relevant articles and documents

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