3'-PT Amino-Modifier C3 CPG 1000

3'-PT Amino-Modifier C3 CPG 1000 is a solid-phase, amino-functional click chemistry building block supplied as a CPG (controlled pore glass) support, designed to introduce a three-carbon (C3) amino handle on the 3′ position of oligonucleotide constructs. As a click-compatible reagent, it is commonly used in bioorthogonal labeling workflows where an amino-modified intermediate is required for subsequent conjugation steps, including attachment of alkyne/azide partners used in copper-free or copper-catalyzed click strategies. The tethered, solid-supported format supports parallel synthesis and purification-friendly handling typical of molecular biology reagent development and materials-oriented nucleic acid engineering.

1. Oligonucleotide Conjugation Handles

3'-PT Amino-Modifier C3 CPG 1000 is used during solid-phase oligonucleotide synthesis to install a 3′-terminal amino functionality that serves as a versatile conjugation handle for downstream bioconjugation workflows. Researchers and diagnostic reagent developers rely on this amino-modified terminus to enable coupling to click-reactive partners, facilitating the preparation of labeled probes, affinity reagents, and assay-ready nucleic acid constructs. The C3 spacer helps manage steric accessibility, which is particularly valuable when the labeled oligonucleotide must maintain efficient hybridization or binding in complex assay formats.

2. Surface and Bead Immobilization

3'-PT Amino-Modifier C3 CPG 1000 supports the creation of immobilized nucleic acid materials by providing an amino-bearing oligonucleotide intermediate that can be anchored to activated surfaces or solid supports prior to or alongside click-based labeling. This application is widely adopted in molecular imaging probe development and in workflow-oriented assay manufacturing, where immobilization on beads, membranes, or microarray platforms improves washing robustness and signal stability. The solid-phase starting support also aligns with scalable synthesis practices used for producing large batches of oligonucleotide reagents for screening and characterization.

3. Click-Enabled Probe and Library Synthesis

3'-PT Amino-Modifier C3 CPG 1000 is commonly incorporated into probe and library synthesis pipelines where nucleic acid scaffolds are diversified with click-compatible tags. By introducing a defined amino handle at the 3′ terminus, the reagent enables modular construction of fluorescent, affinity, or capture-element conjugates through orthogonal coupling steps that integrate smoothly with click chemistry labeling strategies. This approach is frequently used in chemical biology research tool development, including the generation of multi-labeled oligonucleotide panels for studying biomolecular interactions and optimizing assay readouts.

4. Molecular Imaging Reagent Building Blocks

3'-PT Amino-Modifier C3 CPG 1000 is used to prepare imaging-oriented oligonucleotide reagents that require controlled functionalization at the 3′ end before conjugation to imaging moieties. The amino-modified C3 tether provides a practical attachment point for assembling click-reactive conjugates, enabling the production of probe sets tailored for specific imaging chemistries and labeling schemes used in research-grade molecular imaging workflows. Solid-phase compatibility supports consistent batch-to-batch preparation, which is important for comparative studies and for producing standardized reagent lots used in instrument-based characterization.