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Oligo Modifications List | Oligo Modifications Reference Category
Modification : Aminooxy-Modifier-11
Reference Catalog Number 26-6948
Category Conjugation Chemistry & End Modifiers
Modification Code AmOx
5 Prime Y
3 Prime N
Internal N
Molecular Weight (mw) 271.21
Technical Info (pdf) PS26-6948.pdf
Catalog NoScalePrice
26-6948-0550 nmol$318.00
26-6948-02200 nmol$318.00
26-6948-011 umol$413.40
26-6948-032 umol$620.10
26-6948-1010 umol$3,307.20
26-6948-1515 umol$4,134.00

Discounts are available for Aminooxy-Modifier-11!
Modification* Discount Price Structure
1 site/order List price
2 sites/order 10% discount
3 sites/order 20% discount
4 sites/order 30% discount
5-9 sites/order 50% discount
10+ sites/order 60% discount
*Exceptions apply

Related Modifications
Amino dA C6
Amino C6
Amino Serinol
Amino dT C6
Amino dG C6
Amino C3
Amino C6 U
Amino dC C6
Amino C12
Amino C7

Oligos synthesized with Aminooxy Modifier 11 is supplied with 5'-DMT group to be removed at the time of reaction and facilitate reaction with aldehyde and ketones. See protocol below.

The 5'-AminoOxy-Modifier 11 contains the tetraethylene glycol linkage for improved solubility and minimizes the effects on hybridization of the oligo. Aminooxy modifiers can be used in hemoselective conjugation reactions with aldehydes and ketones to form stable oximes. The oxime formed from the reaction of these alkyloxyamines creates a stable covalent bond that is compatible with standard oligonucleotide deprotection conditions. Oxime covalent bonds are a more stable than the imine formed by the conjugation of amines with aldehydes, which require subsequent reduction to secondary amines.
Solution Phase Conjugation Solution-phase with direct-conjugation to an aldehyde or ketone provides the best results. Synthesize the oligo DMT-ON and complete the deprotection. After drying, complete the conjugation in 80% acetic acid to simultaneously remove the DMT group and catalyze the oxime formation.
Solid Phase Conjugation The aminooxy conjugation can also be performed on the column after removal of the 5'-DMT group, provided the label is stable to the subsequent deprotection conditions. If the oligo will not be conjugated immediately, retain the DMT protecting group and remove with 3% TCA in DCM just prior to the conjugation.

Protocol: Conjugation reaction of 5' aminoxy modifier 11 oligo with aldehyde

Gene Link provides the oligo in a dried lyophilized form. The 5' aminoxy modifier 11 oligo is provided in a protected state with a DMT group at the 5' end. This is removed prior to the conjugation reaction with aldehyde by following the protocol below.
1. Suspend lyophilized oligo in water or in a concentration and volume as desired. An aliquot can be used for the conjugation reaction protocol.
2. Add 10 equivalents of aldehyde in a suitable solvent. Example. Total volume of 300 uL.
3. Add 100 uL of acetic acid. Vortex.
4. Incubate for 1 hour at room temperature.
5. Desalt and concentrate by ethanol precipitation protocol below or follow other purification protocol.
5. Add 50 uL of 3M Sodium Acetate and 1 mL of absolute ethanol.
6. Incubate at -20 C for 20 minutes.
7. Centrifuge at 10K rpm for 5 minutes.
8. Decant ethanol carefully so as not to dislodge the oligo pellet.
9. Dry pellet at room temperature.


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