| 2'-OMe-5-Me-U-CE Phosphoramidite | 
 Catalog Number: 10-3131-xx
Description: 2'-OMe-5-Me-U-CE Phosphoramidite
5'-Dimethoxytrityl-5-methyl-Uridine,2'-O-methyl,3'-[(2-cyanoethyl)- (N,N-diisopropyl)]-phosphoramidite | 
| Formula: C41H51N4O9P | 
M.W.: 774.84 | 
F.W.: 334.22 | 
 
Diluent: Acetonitrile:THF (1:1) | 
| Coupling: Dissolve in Acetonitrile:THF (1:1).A 6 minute coupling time is recommended. | 
| Deprotection: No changes needed from standard method recommended by synthesizer manufacturer. | 
| Storage: Freezer storage, -10 to -30°C, dry | 
| Stability in Solution: 3-5 days | 
minor 2’-Ome-rna  phosphoramidites
To aid in the evaluation of the structures of 2’-OMe-RNA  complexes, we offer the CE phosphoramidites listed below. 2’-OMe-T is useful in  triplex studies while the 2-aminopurine derivative may be tested in ribozyme  studies. By supporting an additional hydrogen bond, 2,6-diaminopurine  (2-amino-adenosine) binds more strongly with uridine than does adenosine.  Oligonucleotides containing 2’-OMe-5-Me-C and 2’-OMe-I would be of interest to  researchers involved in triplex and antisense studies using 2’-OMe-RNA. The uses  of 2’-OMe-5-bromo-U phosphoramidite range from crystallographic studies due to  the heavy atom to cross-linking because of its photolability.  5-Fluoro-pyrimidine nucleosides have been useful as therapeutic agents and their  effect on the structure and activity of oligonucleotides may be examined using  the 2’-OMe-RNA derivatives. The 2,4,6-trimethylphenyl (TMP) protected 2’-OMe-U  derivative is a convertible nucleoside and reaction with ammonia leads to the  5-fluoro-dC analogue. 2’-OMe-3-deaza-5-aza-C (Reverse C) derivative has the  potential to mimic in oligonucleotides 5-azacytidine, a DNA methylase inhibitor.  Its ability to bind as a C will likely be diminished.
ABI-style vials are  supplied unless otherwise requested (see note box).
                                        
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