Glen Research Product Information

Catalog Number: 10-1985-xx
Description: DNP-TEG Phosphoramidite

1-Dimethoxytrityloxy-3-O-[N-(2,4-dinitrophenyl)-3-N-aminopropyl-(triethyleneglycol)]- glyceryl-2-O-(2-cyanoethyl)-(N,N-diisopropyl)-phosphoramidite

Formula: C48H64N5O13
M.W.: 950.00 
F.W.: 509.41 

Diluent: Anhydrous Acetonitrile
Add fresh diluent to product vial to recommended concentration and swirl vial occasionally over several minutes until product is completely dissolved. (Some oils may require between 5 and 10 minutes.) Use care to maintain anhydrous conditions. In case of transfer to alternate vial type, ensure recipient vial has been pre-dried. For more information, see http://www.glenres.com/Technical/TB_ABITransfer.pdf.

Coupling: 12-15 minute coupling time. To maintain label yield, carry out the synthesis DMT-on.

Deprotection: To maintain label yield as a 5' modifier, cleave and deprotect as required by nucleobases and then remove the DMT group. Alternatively, treat column with 10% diethylamine in acetonitrile for 2 minutes at room temperature (2x) to remove cyanoethyl protecting groups and rinse with acetonitrile. At this point, the DMT group may be safely removed without loss of label during deprotection.

Storage: Freezer storage, -10 to -30°C, dry

Stability in Solution: 2-3 days

   

Pricing Information

Catalog Number

Pack Size

Price (US$)


10-1985-95
50µm
165.00
10-1985-90
100µm
295.00
10-1985-02
0.25g
675.00

Related Document(s)

  

Literature Highlight(s)

FREQUENTLY ASKED TECHNICAL QUESTION

QUESTION: Can oligonucleotides modified at the 5'-terminus with, for example, biotin be phosphorylated with kinase?

RESPONSE:Modification reagents based on a 1,2-diol, e.g., BioTEG, DNP phosphoramidites, or a 1,3-diol, e.g., fluorescein, biotin phosphoramidites, can be added several times at the 5'-terminus since they contain an alcohol group capable of further addition with phosphoramidites. Can this alcohol also be as a substrate for T4 polynucleotide kinase for 32P labelling of these modified oligonucleotides? Surprisingly, the answer is yes. Teoule and coworkers have shown(1) that oligos labelled at the 5'-terminus are substrates for kinase. Interestingly, the oligos modified with reagents based on 1,2-diols are labelled to 50%, indicating that only one diastereomer is labelled, while those modified with 1,3-diol reagents are labelled to 100%.

REFERENCE(S):
(1) M.L. Fontanel, H. Bazin, and R. Teoule, Analytical Biochemistry, 1993, 214, 338-340.


QUESTION: Can oligonucleotides modified at the 5'-terminus with, for example, biotin be phosphorylated with kinase?

RESPONSE:Modification reagents based on a 1,2-diol, e.g., BioTEG, DNP phosphoramidites, or a 1,3-diol, e.g., fluorescein, biotin phosphoramidites, can be added several times at the 5'-terminus since they contain an alcohol group capable of further addition with phosphoramidites. Can this alcohol also be as a substrate for T4 polynucleotide kinase for 32P labelling of these modified oligonucleotides? Surprisingly, the answer is yes. Teoule and coworkers have shown(1) that oligos labelled at the 5'-terminus are substrates for kinase. Interestingly, the oligos modified with reagents based on 1,2-diols are labelled to 50%, indicating that only one diastereomer is labelled, while those modified with 1,3-diol reagents are labelled to 100%.

REFERENCE(S):
(1) M.L. Fontanel, H. Bazin, and R. Teoule, Analytical Biochemistry, 1993, 214, 338-340.


DILUTION/COUPLING DATA

DILUTION/COUPLING DATA

The table below shows pack size data and, for solutions, dilutions and approximate couplings based on normal priming procedures. Please link for more detailed usage information with the various synthesizers.

ABI 392/394
Cat.No.Pack
Size
Grams/
Pack
0.1M Dil.
(mL)
LV40LV20040nm0.2µm1µm10µm
Approximate Number of Additions
10-1985-020.25grams.25grams2.6374.3344.627.8820.2714.873.72
10-1985-90100µmoles.095grams120127.55.4541
10-1985-9550µmoles.048grams.53.3321.25.91.67.17
Expedite
Cat.No.Pack
Size
Grams/
Pack
Dilution
(mL)
Molarity50nm0.2µm1µm15µm
Approximate Number of Additions
10-1985-020.25grams.25grams3.93.0772.245.1332.824.51
10-1985-90100µmoles.095grams1.5.0723.614.7510.731.48
10-1985-9550µmoles.048grams.75.078.65.383.91.54

 

 

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01/20/2019

 

 

 

 

 

 

 

 

 

 

 

 

 

 


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