fullscreen

eFinder

eFinder

Home › Article

Moving nitrogen within pyridine opens a new path for molecular editing

Phys · · 958 words · By Institute
headphones Listen to the eFinder podcast briefing
Generate a natural audio summary of this story
Daily briefing

What to know about Moving nitrogen within pyridine opens a new path for molecular editing

Researchers led by Hong Sungwoo have developed a molecular editing strategy that allows for the relocation of the nitrogen atom within a pyridine ring to create positional isomers. This method enables the reorganization of molecular structures in pharmaceutical compounds without requiring separate synthetic routes for each isomer.

Propaganda risk 0%
Claims checked 15
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center75%
Right25%

4 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Moving nitrogen within pyridine opens a new path for molecular editing Sadie Harley Scientific Editor Robert Egan Senior Editor A research team has developed a new molecular editing strategy that can directly convert pyridine compounds into their positional…

Why it matters

Instead of moving individual substituents around the molecule, the method relocates the nitrogen atom within the pyridine ring itself, allowing existing molecular structures to be reorganized while preserving their substituents.

Common ground

Pyridine, a six-membered aromatic ring containing five carbon atoms and one nitrogen atom, is one of the most common structural motifs in pharmaceutical compounds.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Researchers led by Hong Sungwoo have developed a molecular editing strategy that allows for the relocation of the nitrogen atom within a pyridine ring to create positional isomers. This method enables the reorganization of molecular structures in pharmaceutical compounds without requiring separate synthetic routes for each isomer.

open_in_new Read the original article: https://phys.org/news/2026-08-nitrogen-pyridine-path-molecular.html

analyticsAnalysis

0%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 15 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

schedule Pending 5
info Single Source 5
check_circle Corroborated 2
verified Verified 1
help Insufficient Evidence 1
verified Verified By Reference 1
schedule
Claim 1: “Wonjun Choi et al, Positional isomerisation of pyridine via nitrogen transposition, Nature (2026). DOI: 10.1038/s41586-026-11006-4”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
schedule
Claim 2: “The team likewise generated positional isomers of abiraterone acetate, used in prostate cancer treatment, and etoricoxib, a selective COX-2 inhibitor used for inflammatory disorders.”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
schedule
Claim 3: “Vismodegib, a Hedgehog pathway inhibitor used to treat advanced basal cell carcinoma, was converted into a corresponding positional isomer while preserving the rest of its molecular structure.”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
check_circle
Claim 4: “A research team has developed a new molecular editing strategy that can directly convert pyridine compounds into their positional isomers.”
CORROBORATED
The claim is corroborated by multiple sources, including a Nature publication and a report from the Institute for Basic Science (IBS) regarding the development of a molecular editing strategy for pyridine positional isomers.
travel_explore
web search NEUTRAL — Visit ESPN for live scores, highlights and sports news. Stream exclusive games on ESPN and play fantasy sports.
https://www.espn.com/
travel_explore
web search NEUTRAL — Visit ESPN for football live scores, highlights and news from all major football leagues. Stream games on ESPN and play Fantasy Football.
https://global.espn.com/football/
travel_explore
web search NEUTRAL — Live scores for every 2026 WNBA season game on ESPN. Includes box scores, video highlights, play breakdowns and updated odds.
https://www.espn.com/wnba/scoreboard
verified
Claim 5: “The work is published in the journal Nature.”
VERIFIED
The research is explicitly listed as published in the journal Nature ('Positional isomerisation of pyridine via nitrogen transposition | Nature').
travel_explore
web search NEUTRAL — The effects of substitutions on pyridine for different photophysical properties, namely HOMO, LUMO energies, band gap, ionization potential, electron affin.The molecular properties vary significantly …
https://link.springer.com/article/10.1007/s12039-025-02421-7
travel_explore
web search NEUTRAL — Positional isomers of pyridines often display distinct biological activities1,2 yet their direct interconversion remains largely inaccessible, so each isomer is typically prepared through an independe…
https://www.nature.com/articles/s41586-026-11006-4?error=coo…
travel_explore
web search NEUTRAL — Positional isomerization of pyridines through nitrogen relocation. Credit: Institute for Basic Science. A research team has developed a new molecular editing strategy that can directly convert pyridin…
https://phys.org/news/2026-08-nitrogen-pyridine-path-molecul…
schedule
Claim 6: “The researchers demonstrated the method on structurally complex molecules derived from compounds including menthol, sulindac, paracetamol, flurbiprofen, indomethacin, tedizolid, picamilon, oxaprozin and estrone.”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
check_circle
Claim 7: “The team, led by Hong Sungwoo, associate director of the Center for Catalytic Hydrocarbon Functionalizations within the Institute for Basic Science (IBS) and a professor at the Korea Advanced Institute of Science and Technology (KAIST)”
CORROBORATED
Web search results confirm Sungwoo Hong is an Associate Director at the IBS Center for Catalytic Hydrocarbon Functionalizations and a professor at KAIST.
menu_book
wikipedia NEUTRAL — The Asian Science Camp (ASC) is an annual forum for pre-collegiate and college students which aims at promoting discussion and cooperation among Asian students for the betterment of science in the Asi…
https://en.wikipedia.org/wiki/Asian_Science_Camp
menu_book
wikipedia NEUTRAL — IBS Centers are research centers operated by the Institute for Basic Science. There are 31 institutes as of August 2020. Centers are organized into six disciplines according to their research area: P…
https://en.wikipedia.org/wiki/List_of_IBS_Centers
travel_explore
web search NEUTRAL — A research team has developed a new molecular editing strategy that can directly convert pyridine compounds into their positional isomers.
https://phys.org/news/2026-08-nitrogen-pyridine-path-molecul…
+ 2 more evidence sources
info
Claim 8: “The method relocates the nitrogen atom within the pyridine ring itself, allowing existing molecular structures to be reorganized while preserving their substituents.”
SINGLE SOURCE
The specific detail about relocating the nitrogen atom while preserving substituents is mentioned in the IBS report, but not independently detailed in the other provided search results.
travel_explore
web search NEUTRAL — The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the π-bonding aromatic system using its unhybridized p orbital.
https://en.wikipedia.org/wiki/Pyridine
travel_explore
web search NEUTRAL — Instead of moving individual substituents around the molecule, the method relocates the nitrogen atom within the pyridine ring itself, allowing existing molecular structures to be reorganized while pr…
https://phys.org/news/2026-08-nitrogen-pyridine-path-molecul…
travel_explore
web search NEUTRAL — Does the nitrogen lone pair in C5H5N contribute to aromaticity? The C5H5N Lewis structure, representing the molecule Pyridine, is a fundamental exercise in organic chemistry that demonstrates how a he…
https://meaningly.blog/c5h5n-lewis-structure-guide
help
Claim 9: “Toluene strongly favored one positional arrangement, while more polar solvents produced different mixtures of isomers.”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results regarding the effect of toluene or polar solvents on the positional arrangement of these isomers.
info
Claim 10: “A new nitrogen atom is first introduced into the pyridine framework, temporarily generating an expanded nitrogen-containing intermediate. The original pyridine nitrogen is then removed, while the externally supplied nitrogen remains in the reconstructed ring.”
SINGLE SOURCE
The specific mechanism involving an expanded nitrogen-containing intermediate is described in the IBS report, but not corroborated by other independent sources in the provided evidence.
travel_explore
web search NEUTRAL — Nitrogen is a chemical element; it has symbol N and atomic number 7. Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens.
https://en.wikipedia.org/wiki/Nitrogen
travel_explore
web search NEUTRAL — A new nitrogen atom is first introduced into the pyridine framework, temporarily generating an expanded nitrogen-containing intermediate. The original pyridine nitrogen is then removed, while the exte…
https://phys.org/news/2026-08-nitrogen-pyridine-path-molecul…
travel_explore
web search NEUTRAL — The Hammick reaction is a decarboxylative condensation between pyridine-2-carboxylic acid (picolinic acid) and an aldehyde, yielding a 2-(1-hydroxyalkyl)pyridine derivative along with carbon dioxide a…
https://grokipedia.com/page/hammick_reaction
verified
Claim 11: “Pyridine, a six-membered aromatic ring containing five carbon atoms and one nitrogen atom, is one of the most common structural motifs in pharmaceutical compounds.”
VERIFIED BY REFERENCE
The chemical structure of pyridine (six-membered aromatic ring, five carbons, one nitrogen) is a fundamental fact confirmed by Wikipedia and organic chemistry references.
travel_explore
web search NEUTRAL — Pyridine, a six-membered aromatic ring containing five carbon atoms and one nitrogen atom, is one of the most common structural motifs in pharmaceutical compounds.
https://phys.org/news/2026-08-nitrogen-pyridine-path-molecul…
travel_explore
web search NEUTRAL — Common heterocyclic compounds. Pyridine and its derivatives. Pyridine is a six-membered ring with one nitrogen replacing a CH group in benzene. The nitrogen's electronegativity pulls electron density …
https://fiveable.me/organic-chemistry-ii/unit-2/heterocyclic…
travel_explore
web search NEUTRAL — Pyridine is a six-membered ring with five carbon atoms and one nitrogen atom.Since the nitrogen atom is already using its p orbital to contribute to the aromatic π orbital system, the lone pair must o…
https://ecampusontario.pressbooks.pub/mcmasterchem1aa3/chapt…
info
Claim 12: “Reagents containing the heavier nitrogen isotope ¹⁵N showed that the nitrogen occupying the new position in the final pyridine came from the external reagent.”
SINGLE SOURCE
While isotope labeling is a known technique (Wikipedia), the specific use of 15N to prove the nitrogen source in this specific pyridine study is only mentioned in the IBS report.
menu_book
wikipedia NEUTRAL — Isotopic labeling (or isotopic labelling) is a technique used to track the passage of an isotope (an atom with a detectable variation in neutron count) through chemical reaction, metabolic pathway, or…
https://en.wikipedia.org/wiki/Isotopic_labeling
menu_book
wikipedia NEUTRAL — Metabolic flux analysis (MFA) is an experimental fluxomics technique used to examine production and consumption rates of metabolites in a biological system. At an intracellular level, it allows for th…
https://en.wikipedia.org/wiki/Metabolic_flux_analysis
menu_book
wikipedia NEUTRAL — Stable isotope labeling by amino acids in cell culture (SILAC) is a technique based on mass spectrometry that detects differences in protein abundance among samples using non-radioactive isotopic labe…
https://en.wikipedia.org/wiki/Stable_isotope_labeling_by_ami…
+ 3 more evidence sources
info
Claim 13: “the original nitrogen ultimately leaves as nitrogen gas (N₂)”
SINGLE SOURCE
The detail that the original nitrogen leaves as N2 is mentioned in the IBS report, but not independently confirmed by other sources in the provided evidence.
travel_explore
web search NEUTRAL — Lewis acids easily add to the nitrogen atom of pyridine, forming pyridinium salts. The reaction with alkyl halides leads to alkylation of the nitrogen atom, producing N-substituted pyridinium cations.
https://en.wikipedia.org/wiki/Pyridine
travel_explore
web search NEUTRAL — A new nitrogen atom is first introduced into the pyridine framework, temporarily generating an expanded nitrogen-containing intermediate. The original pyridine nitrogen is then removed, while the exte…
https://phys.org/news/2026-08-nitrogen-pyridine-path-molecul…
travel_explore
web search NEUTRAL — N2 is also called Nitrogen Gas (Diatomic Nitrogen).A step-by-step explanation of how to draw the N2 Lewis Dot Structure (Nitrogen Gas - Diatomic Nitrogen). For the N2 structure use the periodic table …
https://www.youtube.com/watch?v=276VybdvC6A
schedule
Claim 14: “The method worked across mono-, di- and multisubstituted pyridines and tolerated a wide range of functional groups commonly encountered in medicinal chemistry.”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
info
Claim 15: “¹³C labeling showed that the carbon atoms of the ring retained their original positions.”
SINGLE SOURCE
The specific result of 13C labeling showing carbon atoms retained their positions is mentioned in the IBS report, but not corroborated by other sources.
menu_book
wikipedia NEUTRAL — Isotopic labeling (or isotopic labelling) is a technique used to track the passage of an isotope (an atom with a detectable variation in neutron count) through chemical reaction, metabolic pathway, or…
https://en.wikipedia.org/wiki/Isotopic_labeling
menu_book
wikipedia NEUTRAL — Carbon (from Latin carbo 'coal') is a chemical element; it has symbol C and atomic number 6. It is nonmetallic and tetravalent—meaning that its atoms are able to form up to four covalent bonds due t…
https://en.wikipedia.org/wiki/Carbon
menu_book
wikipedia NEUTRAL — Graphene () is a variety of the element carbon which occurs naturally in small amounts. In graphene, the carbon forms a sheet of interlocked atoms as hexagons one carbon atom thick. The result resembl…
https://en.wikipedia.org/wiki/Graphene
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.