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  • 910074 - 27,27-Dimethyl-25-oxo-3,6,9,12,15,18,26-heptaoxaoctacosanoic acid

910074 Sigma-Aldrich

27,27-Dimethyl-25-oxo-3,6,9,12,15,18,26-heptaoxaoctacosanoic acid


Synonym: 2-2-2-2-2-2-6 PROTAC® linker, Bifunctional linker, OtBu-PEG6-acid

  • Empirical Formula (Hill Notation) C23H44O10

  • Molecular Weight 480.59



Related Categories Bifunctional Linkers, Chemical Biology, Chemical Synthesis, Linkers and Crosslinkers
assay   ≥95%
form   liquid
storage temp.   2-8°C


Other Notes

Modular PROTAC Design for the Degradation of Oncogenic BCR-ABL

Technology Spotlight: Partial PROTACs for Targeted Protein Degradation


This heterobifunctional, PEGylated crosslinker 27,27-dimethyl-25-oxo-3,6,9,12,15,18,26-heptaoxaoctacosanoic acid features a carboxyl group at one end and a t-butyl protected carboxylic acid at the other and exhibits both hydrophobic and hydrophilic moieties for use in biological applications. The linker can be used for bioconjugation or as a building block for synthesis of small molecules, conjugates of small molecules and/or biomolecules, or other tool compounds for chemical biology and medicinal chemistry that require ligation. Examples of applications include its synthetic incorporation into antibody-drug conjugates or pproteolysis-targeting chimeras (PROTAC® molecules) for targeted protein degradation where the linker region is referred to as 2-2-2-2-2-2-6.

Legal Information

PROTAC is a registered trademark of Arvinas Operations, Inc., and is used under license

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Safety Information

Safety Information for this product is unavailable at this time.


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