Nucleotides And Nucleosides

Phosphoramidites are the building blocks of modern molecular biology. Our Nucleotides & Nucleosides category features high-purity phosphoramidites, essential reagents for oligonucleotide synthesis, gene engineering, and diagnostic probe development. Whether you're conducting gene sequencing, designing therapeutics, or creating molecular diagnostics, phosphoramidites enable rapid, precise construction of custom oligonucleotide sequences with high yields and purity.

See Our Complete Phosphoramidite Range

We supply a comprehensive selection including:

• Standard nucleotide phosphoramidites: dA, dG, dC, dT for DNA; A, G, C, U for RNA).
• Modified phosphoramidites: fluorescently labelled, biotinylated, and other functionalised variants.
• Speciality phosphoramidites: for structural studies, aptamer development, and advanced molecular research.

Typical Areas of Use

• Automated oligonucleotide synthesis on DNA/RNA synthesisers
• Custom probe design for qPCR and molecular diagnostics
• Gene therapy and antisense oligonucleotide development
• CRISPR guide RNA synthesis
• Aptamer and molecular screening libraries
• Sequencing primer preparation

Why Prefer AlliedChemi?

Our phosphoramidites meet the highest synthesis grade standards, ensuring optimal coupling efficiency, minimal failure sequences, and reliable results. Whether you're a research lab, diagnostic company, or pharmaceutical developer, we provide the nucleotide building blocks your molecular projects demand.