(E)-Cyclooct-4-en-1-yl (2,5-dioxopyrrolidin-1-yl) carbonate | CAS 1191901-33-3

(E)-Cyclooct-4-en-1-yl (2,5-dioxopyrrolidin-1-yl) carbonate is a strained-alkene click chemistry reagent designed for bioorthogonal labeling workflows that rely on cyclooctene-containing handles and subsequent rapid ligation to complementary partners. Structurally, it presents a cyclooctene functionality masked as a carbonate, enabling stable storage and controlled installation of the reactive cyclooctene motif on target molecules or surfaces. This reagent is commonly relevant to chemical biology and biomaterials research where modular conjugation of cyclooctene groups supports downstream imaging probe attachment, affinity reagent construction, and surface functionalization.

1. Cyclooctene Handle Installation

(E)-Cyclooct-4-en-1-yl (2,5-dioxopyrrolidin-1-yl) carbonate is used to introduce a cyclooctene-bearing functional handle onto biomolecules, polymers, and research-grade reagents prior to subsequent click-based conjugation steps. In practical labeling pipelines, researchers incorporate the reagent during probe preparation to standardize the density and accessibility of the cyclooctene motif, which is critical for consistent performance in multi-step bioconjugation workflows. The carbonate form is particularly useful when a stable, transportable precursor is preferred before coupling to amine-containing targets or when a controlled functional-group transfer strategy is required for reproducible reagent batches.

2. Targeting Ligand Bioconjugation

(E)-Cyclooct-4-en-1-yl (2,5-dioxopyrrolidin-1-yl) carbonate supports the construction of cyclooctene-functional targeting ligands used in chemical biology toolkits, including affinity reagents and binding partners for mechanistic studies. By installing the cyclooctene handle onto peptides, proteins, or other ligand scaffolds, the reagent enables modular assembly of larger conjugates where the cyclooctene component can be coupled to complementary moieties in a later step. This approach is widely adopted in research settings that require flexible interchange of reporter groups, enrichment handles, or imaging tags without redesigning the targeting chemistry each time.

3. Molecular Imaging Probe Assembly

(E)-Cyclooct-4-en-1-yl (2,5-dioxopyrrolidin-1-yl) carbonate is applied in the development of cyclooctene-compatible imaging probe platforms, where the reagent serves as a precursor for installing the cyclooctene handle on probe components. Probe developers often use this strategy to decouple probe synthesis from final reporter attachment, allowing rapid generation of probe variants that share a common cyclooctene-bearing scaffold. The resulting modularity is valuable for building libraries of imaging reagents used in molecular imaging research workflows, including studies that require consistent conjugation chemistry across different reporter classes.

4. Surface and Material Functionalization

(E)-Cyclooct-4-en-1-yl (2,5-dioxopyrrolidin-1-yl) carbonate is used to functionalize surfaces and biomaterials with cyclooctene motifs for downstream click-based immobilization and patterning. Materials scientists and diagnostic reagent developers incorporate cyclooctene handles onto polymer coatings, hydrogel components, and functionalized substrates to create modular platforms where subsequent conjugation can be performed with complementary click partners. This enables fabrication of reagent-bearing surfaces, capture matrices, and engineered material interfaces that benefit from orthogonal assembly strategies and scalable, batch-to-batch reproducibility in research and industrial laboratory settings.