Valliappan Kannappan

Episode 7: Toxicity and Food Safety Considerations of Chiral Agrochemicals

Leave a Comment / Chiral science / By / , , / June 11, 2026

When Molecular Handedness Shapes Food Safety: Understanding the Hidden Side of Agrochemical Toxicity. Introduction The toxicity of agrochemicals is a central concern for agriculture, food security, and public health. Chiral agrochemicals complicate this issue further because their enantiomers often differ in both biological activity and toxicological effects. While one enantiomer may efficiently control pests, the …

Episode 7: Toxicity and Food Safety Considerations of Chiral Agrochemicals Read More »

Episode 6: Environmental Impact of Chiral Agrochemicals

Leave a Comment / Chiral Agrochemicals, Chiral Agrochemistry, Chiral science / By / , / June 5, 2026

๐ŸŒ From Soil to Streams: How Molecular Handedness Shapes Environmental Fate. Introduction When agrochemicals are applied in the field, they do not remain confined to the crops they are intended to protect. They enter soil, water, and air, where they interact with complex ecosystems. For chiral agrochemicals, these interactions are influenced not only by chemical …

Episode 6: Environmental Impact of Chiral Agrochemicals Read More »

Episode 5: Natural Products as Chiral Templates

Leave a Comment / Chiral Agrochemicals, Chiral science / By / , , / June 1, 2026

๐ŸŒฟ Nature’s Handedness, Agriculture’s Inspiration. Introduction Nature is the ultimate chemist, and chirality is one of its most powerful design principles. Many of the most effective agrochemicals are inspired by or derived directly from natural compounds, which are overwhelmingly chiral. These natural products serve as templates for synthetic agrochemistry, guiding the development of pesticides, herbicides, …

Episode 5: Natural Products as Chiral Templates Read More »

Episode 4: Fungicides and Stereochemistry

1 Comment / Chiral Agrochemicals, Chiral science / By / , , / June 1, 2026

๐ŸŒฑWhen Molecular Handedness Determines Fungal Control for a More Sustainable Future. ๐Ÿ„ Introduction Fungal infections cause devastating losses in agriculture, threatening global food security. Fungicides are therefore essential tools in crop protection. Many fungicides are chiral, and their enantiomers can differ significantly in fungicidal potency, environmental behavior, and toxicity to non-target organisms. The stereochemistry of …

Episode 4: Fungicides and Stereochemistry Read More »

Episode 3: Herbicides and the Role of Chirality

1 Comment / Chiral Agrochemicals, Chiral science / By / , , / June 2, 2026

๐ŸŒฑ Herbicides Have Two Faces โ€” Chirality Decides Their Impact.โ€ ๐Ÿงฌ Introduction Herbicides are among the most widely used agrochemicals worldwide. They are applied to protect crops from weed competition, ensuring higher yields and food security. A significant number of herbicides are chiral, and their enantiomers often show large differences in biological activity, environmental fate, …

Episode 3: Herbicides and the Role of Chirality Read More »

Episode 2: Stereoselectivity and Biological Activity in Pesticides

Leave a Comment / Chiral Agrochemicals, Chiral science / By / , , / June 2, 2026

๐Ÿงฌ๐ŸŒฑ โ€œWhen Mirror Images Decide Between Protection and Toxicity.โ€ Introduction Pesticides are essential tools in modern agriculture, protecting crops from insects, weeds, and pathogens. Many of these compounds are chiral, meaning they exist as two or more non-superimposable mirror-image forms called enantiomers. Enantiomers often exhibit very different biological activities, toxicities, and environmental behaviors. Understanding these …

Episode 2: Stereoselectivity and Biological Activity in Pesticides Read More »

Episode 1: Introduction to Chirality in Agrochemicals

Leave a Comment / Chiral science / By / , , / June 1, 2026

What happens when ๐’„๐’‰๐’Š๐’“๐’‚๐’๐’Š๐’•๐’š ๐’Ž๐’†๐’†๐’•๐’” ๐’„๐’“๐’๐’‘ ๐’”๐’„๐’Š๐’†๐’๐’„๐’†? Introduction Chirality, the property of a molecule that makes it non-superimposable on its mirror image, is a crucial consideration in agrochemistry. Agrochemicals such as pesticides, herbicides, and fungicides often contain one or more stereogenic centers. The two enantiomers of a chiral molecule can behave very differently in biological …

Episode 1: Introduction to Chirality in Agrochemicals Read More »

Germanium ๐Ÿงฌ: Beyond Carbon โ€” A Chiralpedia Guide to a New Dimension of Chirality

Leave a Comment / Chiral science, Chirality / By / , , / April 17, 2026

Demonstrates that chirality extends beyond carbon into heavier elements Introduction: Beyond Carbon-Centered Chirality Chirality is one of the most fundamental concepts in chemistry, typically introduced through tetrahedral carbon atoms bearing four different substituents. However, chirality is not limited to carbonโ€”it extends across the periodic table. Germanium, a Group 14 element positioned below silicon, presents a …

Germanium ๐Ÿงฌ: Beyond Carbon โ€” A Chiralpedia Guide to a New Dimension of Chirality Read More »

X-ray Reveals the Truth. R/S Makes It Speak.

Leave a Comment / Chiral science / By / , , / April 10, 2026

Why stereochemistry is not just about seeing moleculesโ€”but learning how to describe them In modern chemistry, we have powerful tools like X-ray crystallography that can reveal the exact three-dimensional structure of a molecule with remarkable precision. So it raises a compelling question: If we already know what a molecule truly looks like in 3Dโ€ฆ why …

X-ray Reveals the Truth. R/S Makes It Speak. Read More »

Case Study Through the Chiralpedia Lens: tert-Butanesulfinamide โ€” The Sulfur-Centered Chiral Tool That Changed Drug Synthesis

2 Comments / Chiral science / By / , , / March 25, 2026

A Quiet Revolution in Asymmetric Synthesis tert-Butanesulfinamide, widely known as Ellmanโ€™s sulfinamide, is one of the most influential chiral auxiliaries in modern asymmetric synthesis. Developed in the 1990s by the laboratory of Jonathan Ellman, this sulfur-centered chiral reagent revolutionized the stereoselective construction of aminesโ€”key structural motifs in pharmaceuticals and agrochemicals. Its configurationally stable stereogenic sulfur …

Case Study Through the Chiralpedia Lens: tert-Butanesulfinamide โ€” The Sulfur-Centered Chiral Tool That Changed Drug Synthesis Read More »