# Making Deuterium-Labeled Chemicals Precisely with Metal Catalysts > This patent describes new ways to precisely add a special type of hydrogen called deuterium to specific parts of chemical molecules using metal helpers, making them useful for medicines or research. - **Patent:** US 12735369 - **Original title:** Selective transition metal catalyzed deuterium incorporation into alkyne and alkene functionalities - **Granted:** 2026 - **Status:** Active - **Times cited:** 0 - **Field:** pharmaceutical, biotech, chemicals, materials, research_and_development ## What it does Based on the abstract, this patent describes new chemical methods for precisely adding deuterium, a heavier version of hydrogen, to specific parts of molecules. These 'transition metal catalyzed methods' are designed to incorporate deuterium into 'alkyne and alkene functionalities' – which are specific types of chemical bonds. The methods are 'regioselective', meaning the deuterium goes to a particular spot, and 'enantioselective', meaning it produces mostly one specific 3D mirror-image form of the molecule. This precision allows for creating 'isomerically and/or enantiomerically pure or enriched deuterated compounds'. The abstract also notes these methods can be adapted to make fluorinated compounds. For example, a drug developer could use this method to swap a hydrogen for a deuterium at a specific carbon atom in a drug candidate, ensuring the new molecule has a precise structure for improved stability. ## What it does NOT cover - Does not cover methods for adding deuterium that do not use transition metal catalysts. - Does not cover deuterium incorporation into chemical structures other than alkynes and alkenes. - Does not cover methods that produce a random mix of deuterium locations or mirror-image forms. - Does not cover the creation of fluorinated compounds if the method is not a modification of the described deuterium incorporation techniques. ## The clever bit The novelty lies in combining transition metal catalysis with highly selective control to precisely place deuterium atoms into specific alkyne and alkene bonds, ensuring both the correct location and the desired 3D mirror-image form of the molecule. ## Real-world examples 1. Synthesis of deuterated drug candidates for pharmaceutical research 2. Creation of stable isotope tracers for metabolic studies 3. Preparation of internal standards for analytical chemistry (e.g., NMR spectroscopy) 4. Production of specialty chemicals with enhanced properties ## Why it matters Precisely adding deuterium to molecules is critical in drug development, as it can improve drug stability, alter how the body processes them, and extend their effectiveness. This patent's focus on regioselective and enantioselective methods means it offers fine control over the chemical structure, which is essential because different molecular arrangements can have vastly different biological effects. Such precise control is valuable for creating new medicines and for advanced chemical research. ## Frequently asked questions ### What does Making Deuterium-Labeled Chemicals Precisely with Metal Catalysts cover? This patent describes new ways to precisely add a special type of hydrogen called deuterium to specific parts of chemical molecules using metal helpers, making them useful for medicines or research. ### When does this patent expire? This patent is expected to expire on September 15, 2046, when the invention enters the public domain. ### What problem does this patent solve? Precisely adding deuterium to molecules is critical in drug development, as it can improve drug stability, alter how the body processes them, and extend their effectiveness. This patent's focus on regioselective and enantioselective methods means it offers fine control over the chemical structure, which is essential because different molecular arrangements can have vastly different biological effects. Such precise control is valuable for creating new medicines and for advanced chemical research. ### What does this patent NOT cover? Does not cover methods for adding deuterium that do not use transition metal catalysts. **Full plain-English explainer:** https://patentbrief.org/patent/us/12735369/selective-transition-metal-catalyzed-deuterium-incorporation-into-alkyne-and **Original patent:** https://patents.google.com/patent/US12735369 --- _Source: PatentBrief — https://patentbrief.org. Patent facts are from public records; the plain-English explanation is PatentBrief's._ ## Related patents Semantically similar inventions in the PatentBrief corpus: - [Targeted Platinum Drugs for Cancer Treatment](https://patentbrief.org/patent/us/9884123/ligand-targeted-molecules-and-methods-thereof) — This patent describes a way to deliver platinum-based cancer drugs directly to tumor cells by attaching them to a special 'ligand' molecule that seeks out cancer cell markers. - [Improving Drug Delivery with Chemical Masks for Thiazolo-Pyrimidine Compounds](https://patentbrief.org/patent/us/7528115/eylea-aflibercept) — A patent describing modified chemical structures that act as dormant precursors, designed to be activated by the body to help treat viral infections like Hepatitis C. - [How to Manufacture a Complex Cancer-Fighting Drug Molecule](https://patentbrief.org/patent/us/12365678/raptor-production) — A detailed chemical recipe for mass-producing a specific cancer-fighting molecule, including the intermediate building blocks needed to construct it efficiently. - [New Chemical Compounds for Brighter, More Efficient OLED Screens](https://patentbrief.org/patent/us/12740310/organic-electroluminescent-materials-and-devices) — This patent describes new organometallic chemical compounds designed to improve the performance of organic light-emitting diode (OLED) displays found in many modern electronic devices. - [New Chemical Compounds for Protecting Crops from Fungal Diseases](https://patentbrief.org/patent/us/10626109/symdeko-tezacaftor-ivacaftor) — A patent describing a specific family of chemical compounds designed to kill or inhibit the growth of fungi that damage agricultural crops.