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  • resins
  • Thermo Scientific Zeba Desalting Products contain a proprietary high-performance size exclusion resin that offers exceptional desalting and protein-recovery characteristics compared to other commercially available resins. (thermofisher.com)
  • concentrations
  • However, low concentrations of a radical scavenger establish thermodynamic control and provide access to 6-endo products-not via 6-endo cyclization, but by 5-exo cyclization followed by 3-exo closure and subsequent fragmentation (Dowd-Beckwith rearrangement). (wikipedia.org)
  • Whereas at high concentrations of the exo product is rapidly trapped preventing subsequent rearrangement to the endo product Aryl radicals exhibit similar reactivity. (wikipedia.org)
  • active
  • Since they affect chirality, they produce optically active products from optically inactive or mixed starting materials. (wikipedia.org)
  • chain
  • Unfortunately, in 42% of the product, the alkyl chain was not installed, and instead the aldehyde was reduced with an accompanying acetate migration to form a triacetate (structure 14). (wikipedia.org)
  • To obtain the desired oligonucleotide, the building blocks are sequentially coupled to the growing oligonucleotide chain in the order required by the sequence of the product (see Synthetic cycle below). (wikipedia.org)