Back to top

Nucleobase Modifications (for ASOs)

 
Nucleobase Modifications Position
  5’ 3’ int
5-Me-dC     X

 

5-Methyl-2'-deoxycytidine

5-Me-dC
 

5-Methyl-2'-deoxycytidine when substituted for dC will increase the Tm by as much as 0.5°C per insertion. In addition, the presence of 5-Methyl dC in CpG motifs can prevent or limit unwanted immune responses that otherwise occur if oligos are administered in vivo, which is of particular importance in antisense applications.

 
Position
Synthesis Scale [µmol]
Purification
 
0.04
0.2
1.0
15
Des
HPLC
PAGE
Int  
X
X
O  
X
X
X = available/on stock
O = on request