Topic

Nitrogen-containing heterocycles

Techniques for detecting, quantifying and localizing antigens and antibodies — ELISA, Western blotting, immunohistochemistry and flow cytometry. Below are the protocols, FAQs and technical articles in our knowledge base tagged with this topic.

4 resources · protocols, FAQs & articles
article

Quinazoline (Quinazoline, 1,3-Diazanaphthalene) Research Selection Guide: Structural Features, Application Scenarios, and Key Reagent Navigation (Tables 1–4)

Quinazoline is a fused, aromatic nitrogen-containing heterocyclic core scaffold. In research and medicinal chemistry, compounds derived from this core are commonly referred to collectively as “quinazoline derivatives.” Structurally, quinazoline can be understood as a bicyclic system formed ...

Updated Mar 202612 min read✓ Reviewed
article

Make “Aryl Chlorides + Low Pd Loading + Scale-Up Reproducibility” Reliable: The Initiation and Durability Logic of Pd–NHC (Palladium–N-Heterocyclic Carbene) Cross-Coupling (with Selection Navigation and Product Tables)

Modern synthesis increasingly faces the same hard requirement set: use less Pd, deal with “less reactive” substrates (typified by aryl chlorides), and still maintain yield, impurity profile, and batch-to-batch reproducibility upon scale-up. When the substrate is harder to activate (Ar–Cl), ...

Updated Feb 202612 min read✓ Reviewed
article

Why Acridine Can Turn “Trace Molecules” into a Measurable Light Signal: A Mechanistic, Selection, and Troubleshooting Guide to Acridinium Ester Chemiluminescent Immunoassays (Including Product Tables 1–4)

In clinical diagnostics and life-science testing, many analytes (hormones, tumor markers, infection-related proteins, etc.) exist at very low concentrations. A detection system must satisfy three requirements at once: high sensitivity (detectable at low concentration), high speed (automation and ...

Updated Feb 202612 min read✓ Reviewed

Related topics

Techniques often explored alongside immunological experiments.

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