Tos-PEG3-Bn

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CAS No. 84131-04-4
Cat. No. CS-0037214
Purity≥96%
MDL No.MFCD31555345

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Each bottle is packed as an Excepted Quantity, with a maximum of 1g for items in class 6.1 packing group I or II, and up to 25g for all other hazardous materials.

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Type	HazMat Fee
Excepted Quantity	$0.00
FedEx Limited Quantities Ground	$0.00
Hazmat Ground shipping	$50.00+
Inaccessible (Haz class 6.1 or 9), Domestic	$68.00+
Accessible (Haz class 3, 4, 5 or 8), Domestic	$158.00+
Inaccessible (Haz class 6.1 or 9), International	$108.00+
Accessible (Haz class 3, 4, 5 or 8), International	$238.00+

An item is classified as a dangerous good if our website displays Hazardous Material (HazMat) information for it.

There is a HazMat shipping fee for each item that qualifies as a dangerous good. Please contact our quotation team via email to confirm the details.

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Structure of 84131-04-4

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General Information

CAS No. 84131-04-4
Cat. No. CS-0037214
Purity ≥96%
MDL No. MFCD31555345
Storage -20°C, stored under nitrogen
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₂₀H₂₆O₆S
Molecular Weight 394.48
Synonym(s) None
SMILES O=S(=O)(OCCOCCOCCOCC=1C=CC=CC1)C2=CC=C(C=C2)C

Description

This benzyloxy-functionalized sulfonate ester delivers a robust, moisture-tolerant leaving group for efficient etherification reactions. Featuring a triethylene glycol spacer flanked by benzyl-protected hydroxyls, it enables selective C–O bond formation under mild conditions. The electron-deficient para-methylphenylsulfonate moiety ensures high reactivity while maintaining stability during storage and handling.

Application

2-(2-(2-(Benzyloxy)ethoxy)ethoxy)ethyl 4-methylbenzenesulfonate serves as a robust, bench-stable protecting group reagent for primary alcohols, enabling selective etherification under mild conditions. Its trifluoromethylsulfonate-like reactivity facilitates efficient glycosylation and oligosaccharide synthesis, with the benzyloxy chain providing orthogonal deprotection compatibility. The p-toluenesulfonate leaving group ensures high chemoselectivity in complex molecule assembly, while the extended polyether tether enhances solubility and reduces aggregation during purification.

Safety Information

Download SDS

GHS Pictogram :	GHS No : GHS07
Signal Word : Warning	UN#: N/A
Class : N/A	Packing Group : N/A
Hazard Statements : H302-H315-H319-H335
Precautionary Statements : P261-P280-P302+P352

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Computational Chemistry Data

TPSA 71.06
LogP 2.95032
H_Acceptors 6
H_Donors 0
Rotatable_Bonds 13

Other Classifications

Building Blocks Functional Group Sulfonate

Building Blocks Functional Group Ether

Building Blocks Skeleton Aromatic ring compounds Benzene compounds

Key Words

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Tos-PEG3-Bn

CAS No. 84131-04-4

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