Lot numbers can be found on the outside label of a product:
Bis-Tos-PEG6
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CAS No. 42749-27-9
- Cat. No. CS-0114360
- Purity≥98%
- MDL No.MFCD00319275
*For research and further manufacturing use only, not for direct human use.
Structure of 42749-27-9
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General Information
- CAS No. 42749-27-9
- Cat. No. CS-0114360
- Purity ≥98%
- MDL No. MFCD00319275
- Storage 4°C
- Shipping Room temperature in continental US; may vary elsewhere.
- Molecular Formula C₂₆H₃₈O₁₁S₂
- Molecular Weight 590.70
- Synonym(s) None
- SMILES O=S(C1=CC=C(C)C=C1)(OCCOCCOCCOCCOCCOCCOS(C2=CC=C(C)C=C2)(=O)=O)=O
Description
Bis-Tos-PEG6 features a bis-tosylated core linked by a hexaethylene glycol spacer, offering enhanced solubility and stability in aqueous and polar organic media. This bifunctional reagent enables efficient conjugation workflows in bioconjugation and polymer synthesis, where precise spacing and robust linkage are required.
Application
Bis-Tos-PEG6 serves as a versatile bifunctional linker in synthetic organic chemistry, enabling efficient conjugation of active pharmaceutical ingredients and biomolecules. Its PEG6 spacer provides enhanced solubility and reduced aggregation, while the Tosyl (Tos) groups offer reliable activation for nucleophilic substitution under mild conditions. The molecule demonstrates excellent bench stability and compatibility with diverse functional groups, facilitating straightforward purification and integration into standard peptide and small-molecule synthesis workflows.
Synthesis
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Route1
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In-stock
2615-15-8 -
98-59-9 - ~99%
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In-stock
42749-27-9
References
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Sekiguchi, Hironori; Muranaka, Kazuhiro; Osada, Akiko; Ichikawa, Satoshi; Matsuda, Akira Bioorganic and Medicinal Chemistry, 2010 , vol. 18, # 15 p. 5732 - 5737
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References
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Bouzide, Abderrahim; Sauve, Gilles Organic Letters, 2002 , vol. 4, # 14 p. 2329 - 2332
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Route3
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144270-96-2
- ~%
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In-stock
42749-27-9
References
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Chen, Yiyan; Baker, Gregory L. Journal of Organic Chemistry, 1999 , vol. 64, # 18 p. 6870 - 6873
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Safety Information
Download SDS|
GHS Pictogram :
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GHS No : GHS07
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Signal Word : Warning
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UN#: N/A
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Class : N/A
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Packing Group : N/A
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Hazard Statements : H315-H319
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Precautionary Statements : P264-P280-P302+P352-P362
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Quality Control
Computational Chemistry Data
- TPSA 132.89
- LogP 2.49724
- H_Acceptors 11
- H_Donors 0
- Rotatable_Bonds 22
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Key Words
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