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Tos-PEG4-CH2CO2H

CAS No.
1581248-63-6
Chemical Name:
Tos-PEG4-CH2CO2H
Synonyms
Tos-PEG3-CH2COOH;Tos-PEG4-CH2CO2H;2-[2-[2-[2-(Tosyloxy)ethoxy]ethoxy]ethoxy]acetic Acid;2-[2-[2-[2-(4-methylphenyl)sulfonyloxyethoxy]ethoxy]ethoxy]acetic acid;2-[2-(2-{2-[(4-methylbenzenesulfonyl)oxy]ethoxy}ethoxy)ethoxy]acetic acid;Acetic acid, 2-[2-[2-[2-[[(4-methylphenyl)sulfonyl]oxy]ethoxy]ethoxy]ethoxy]-
CBNumber:
CB83062689
Molecular Formula:
C15H22O8S
Molecular Weight:
362.4
MDL Number:
MFCD27977516
MOL File:
1581248-63-6.mol
MSDS File:
SDS
Last updated:2026-05-28 04:28:17

Tos-PEG4-CH2CO2H Properties

Boiling point 539.9±45.0 °C(Predicted)
Density 1.280±0.06 g/cm3(Predicted)
solubility Soluble in DCM
pka 3.39±0.10(Predicted)

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H302-H315-H319-H335
Precautionary statements  P280-P305+P351+P338

Tos-PEG4-CH2CO2H price More Price(19)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Biosynth GNC24863 Tos-PEG4-CH2CO2H 1581248-63-6 500mg $790 2026-06-04 Buy
Biosynth GNC24863 Tos-PEG4-CH2CO2H 1581248-63-6 1000mg $1270 2026-06-04 Buy
ChemScene CS-0110338 Tos-PEG3-CH2COOH ≥98% 1581248-63-6 100mg $150 2026-06-04 Buy
ChemScene CS-0110338 Tos-PEG3-CH2COOH ≥98% 1581248-63-6 250mg $270 2026-06-04 Buy
ChemScene CS-0110338 Tos-PEG3-CH2COOH ≥98% 1581248-63-6 1g $600 2026-06-04 Buy
Product number Packaging Price Buy
GNC24863 500mg $790 Buy
GNC24863 1000mg $1270 Buy
CS-0110338 100mg $150 Buy
CS-0110338 250mg $270 Buy
CS-0110338 1g $600 Buy

Tos-PEG4-CH2CO2H Chemical Properties, Uses, Production

Description

Tos-PEG4-CH2CO2H is a PEG linker containing a tosyl group and a terminal carboxylic acid. The hydrophilic PEG spacer increases solubility in aqueous media. The tosyl group is a very good leaving group for nucleophilic substitution reactions. The terminal carboxylic acid can be reacted with primary amine groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond.

Uses

Tos-PEG3-CH2COOH is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

IC 50

PEGs

References

[1] Snaebjornsson MT, et al. Non-canonical functions of enzymes facilitate cross-talk between cell metabolic and regulatory pathways. Exp Mol Med. 2018 Apr 16;50(4):34. DOI:10.1038/s12276-018-0065-6

Tos-PEG4-CH2CO2H Preparation Products And Raw materials

Raw materials

Preparation Products

Tos-PEG4-CH2CO2H Suppliers

Global Suppliers ( 36)
Supplier Tel Email Country ProdList Advantage
Borenpharm Co., Ltd 027-65563561 sales@borenpharm.com China 1245 55
Jinan elephant international trading co., LTD 13006575422@163.com China 6347 58
Zhengzhou Acme Chemical Co., Ltd. 0371-0371-55629727 13323845623 2885676761@qq.com China 9957 58
Shanghai Yihe Biological Technology Co., Ltd. 021-68882955 17721395025 2423903095@qq.com China 5000 58
SHANGHAI FDC-CHEMICAL CO.,LTD 021-61469567 13774476675 sales@fdc-chemical.com China 10000 58
Xi'an Confluore Biological Technology Co., Ltd. +86-156-80926068 +86-15680926068 1924344760@qq.com China 4229 58
TargetMol Chemicals Inc. +1-781-999-5354; +1-00000000000 marketing@targetmol.com United States 32431 58
Wuhan Borenpharm Co., Ltd 027-65563561 18717150066 3207347307@qq.com CHINA 1238 58
Shaanxi Xinyan Bomei Biotechnology Co., Ltd. 13892832556 2440688701@qq.com China 1978 58
Changsha Bono New Materials Technology Co., Ltd. 18191076804 asherw9@hotmail.com China 2373 58
Tos-PEG4-CH2CO2H Tos-PEG3-CH2COOH Acetic acid, 2-[2-[2-[2-[[(4-methylphenyl)sulfonyl]oxy]ethoxy]ethoxy]ethoxy]- 2-[2-[2-[2-(Tosyloxy)ethoxy]ethoxy]ethoxy]acetic Acid 2-[2-(2-{2-[(4-methylbenzenesulfonyl)oxy]ethoxy}ethoxy)ethoxy]acetic acid 2-[2-[2-[2-(4-methylphenyl)sulfonyloxyethoxy]ethoxy]ethoxy]acetic acid 1581248-63-6