Amine (dR) - 1 modification

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  • Cat.Number : MD-MF040-DR004
  • Availability :
    In production

Synthesis scale

Alternative choices

The introduction of a primary Amine (NH2) at the 5’-position is used to functionalize the corresponding terminus of the nucleotide for conjugation with e.g. an activated NHS ester or isothiocyanate fluorescent label. Several spacers are available (C3; C6 and C12), all of them are hydrophobic. The available lengths of the spacers are 3, 6, or 12 methylene (CH2) groups between the terminal phosphate and the amino “moiety”.

The 3’-NH2 modification allows the prevention of the 3’>5’ exonuclease degradation of oligonucleotides in biological fluids such as cell culture medium.

C6-dT, dU, Propargyl-dU and Propargylcaproyl-dU amino modifiers are used in post-coupling reactions, for instance, for modifying oligonucleotides that will be printed onto microarrays.

dR-NH2 modification (deoxyribose-NH2) forms abasic sites in the oligonucleotide. It provides the possibility to add more than one label anywhere in the sequence or on either terminus after post-coupling reactions between the Amine group and an activated label. The label is linked to the deoxyribose via a 6-carbon atom spacer which reduces steric hindrance.


Molecular Mass/ Weight
  • 295,27
Modification Position
  • 3'
  • 5'
  • IN
Storage & stability
Resuspension condition
  • - Spin the tube briefly to collect the pellet in the bottom of the tube - Add an appropriate volume of recommended buffer (refer to technical data sheet) - Allow the tube to stand a few minutes - Vortex the tube for 15 seconds
Storage Conditions
  • Dried Oligonucleotides are stable for 18 months at ambiant temperature. Oligonucleotides in solutions are stable for 24 months at -20°C. (Tolerance -20°C± 5°C. ) For more information please refer to the Reconstitution-Storage-Stability page
  • Research use
Code Nacres
  • NA.51

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