CAS Number N/A | |
Molecular Weight 639.66; single compound | |
Chemical Formula C₂₇H₃₇ F₄N₃O₈S | |
Purity > 98% | |
Unit Size 100mg, 1000mg | |
Solubility Methylene chloride, DMAC or DMSO. | |
Spacers dPEG® Spacer is 16 atoms and 19.2 Å | |
Storage Instructions -20°C; Always let come to room temperature before opening; be careful to limit exposure to moisture and restore under an inert atmosphere; stock solutions can be prepared with dry solvent and kept for several days (freeze when not in use). dPEG® pegylation compounds are generally hygroscopic and should be treated as such. This will be less noticeable with liquids, but the solids will become tacky and difficult to manipulate, if care is not taken to minimize air exposure. | |
Shipping Instructions Ambient |
Biotin-dPEG®₄-TFP ester
Biotin-dPEG®4-TFP ester, product number QBD-10009, is an amine-reactive, water-soluble biotin label functionalized with a hydrolytically stable 2,3,5,6-tetrafluorophenyl ester. The single molecular weight PEG4 (dPEG®4) linker is longer than the aminocaproic acid linker of LC-biotin and slightly longer than the two conjugated aminocaproic acid linkers of LC-LC-biotin, allowing for better interaction with the biotin-binding pockets of avidin and streptavidin. Furthermore, unlike traditional LC linkers, the dPEG® linker is flexible and hydrophilic, eliminating biotinylated protein aggregation proteins over time. The TFP ester is more hydrolytically stable than classic NHS esters and has an optimum pH range of 7.5 – 8.5 for conjugating to free amines.
Price range: $109.00 through $656.00
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