Oligonucleotide Modifications

By Properties & Functions

Find the right chemistry—by property or function.

Overview

Scan the landscape of modification types and quickly jump to what you need—probe chemistries, hybridization control, nuclease stability, intercalators, universal bases, metal chelates, redox labels, and more. All options are available with expert design support, scalable manufacturing, and full QC.

Aptamers

Structured DNA/RNA ligands for SELEX-ready libraries with high-affinity binding to proteins, cells, or small molecules; ideal for capture, imaging, and therapeutics.

Binding Explore

Affinity Binding and Capturing

Biotin/streptavidin capture, Dig/DNP detection, His-tag style NTA-Ni binding for pull-down, detection, or immobilization in ELISA, lateral flow, and biosensor.

Capture Explore

Fluorescent Quenching Singal Suppression

Environment-sensitive bases and dark reporters for label-free detection, hybridization monitoring, or FRET acceptors without emission.

Sensing Explore

Cleavable Fluorescent Probes

Photocleavable or chemically cleavable dye linkers for background suppression, release assays, and spatiotemporal activation.

Caged Explore

Non-Canonical Structures

G-quadruplex, triplex-forming, and structural stabilizers to control folding, topology, and higher-order organization. Supports aptamer stability and nanostructure design.

Structure Explore

Convertible Bases

Protected, reactive bases that are transformed post-synthesis to introduce custom functional groups at defined positions for bioconjugation.

Reactive Explore

Deuterated Bases

Isotopically labeled nucleotides (²H) for mechanistic studies, mass-spectrometric tracing, and pharmacokinetic profiling.

Isotope Explore

Photoswitchable Markers

Reversible photochromic units (e.g., azobenzene) to modulate Tm or hybridization singal, conformation. Supports photo-gating and logic circuits.

Photo Explore

Degenerate Bases

Wobble/ambiguous bases (e.g., inosine, mixed bases) to accommodate variability in target sequences and library design. Balance degeneracy with specificity using modeling support.

Wobble Explore

Affinity & Hybridization Control

LNA/BNA/cEt, MOE and related chemistries to tune Tm, mismatch discrimination, and clamping for PCR/ASO/antisense. Backbones: PS, PM, PN to increase stability and binding half-life.

Tm Control Explore

Intercalator Modifications

Planar aromatic intercalators (psoralen, acridines, naphthalimides, YO/YOYO) for crosslinking, stabilization, and imaging.

Intercalate Explore

Metal Chelation Modifications

EDTA/DTPA/NTA and custom chelators for radiometals, lanthanides, or catalytic cleavage mapping. Lanthanide/ radiometal labeling for TR-FRET or SPECT/PET tracers.

Chelation Explore

Nuclease Resistance & Stability

Backbone and sugar chemistries (PS, PM/PN, 2′-OMe, 2′-F, LNA/BNA, cEt) and terminal caps to enhance in vitro/in vivo durability. Sugar variants (2′-OMe, 2′-F, LNA/BNA, cEt, UNA) for ASO/siRNA.

Stability Explore

Photo Regulation

NOMP-dT, DEACM cages for light-triggered activation, cleavage, or release. Ideal for spatiotemporal control in cells or materials.

Light Explore

Universal Bases

Indole/5-nitroindole and related analogs that pair non-specifically to enable mixed templates or degenerate priming. Useful in degenerate primers and mixed templates.

Universal Explore

Need a custom modification or help choosing the best chemistry?

Tell us your assay, instrument, scale, and QC needs. We’ll propose the optimal base, backbone, or label with delivery timeline and quote.

Speak to a Scientist Explore All Modifications

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