Chlorpyrifos and the Power of Generics: What Ag Retailers Should Know
Chlorpyrifos has had one of the most dramatic arcs of any modern insecticide — from a blockbuster proprietary product to one of the most widely traded generic active ingredients in the world. And while its regulatory status in the U.S. has shifted significantly in recent years, its global role continues to evolve. As part of that ongoing conversation, CropLife’s sister brand AgriBusiness Global recently sat down with Ram Seethapathi, President & CEO America for Gharda Chemicals, to discuss chlorpyrifos’ past, present, and future.
For U.S. ag retailers, his perspective offers a useful look at how generics shape the crop protection landscape — and what lessons can be learned from chlorpyrifos’ long journey.
The Journey From Proprietary Blockbuster to Global Generic
Chlorpyrifos’ patent expired more than forty years ago, opening the door for its transition from a branded multinational product to a globally produced generic. Gharda Chemicals was among the earliest players to enter the market with a technical and formulated version of the active ingredient.
“Chlorpyrifos is a very old compound — its patent expired more than four decades ago,” Seethapathi explained. He noted that Gharda’s entry was enabled by a manufacturing breakthrough. “Unlike the original Dow Elanco route, which relied on pyridine, our process used acetic acid as the starting raw material. This made manufacturing safer and more sustainable by avoiding the risks associated with pyridine.”
That innovation allowed generic suppliers to begin competing with established multinational brands, though it wasn’t easy early on. “As with any generic entry, it was initially a struggle to compete against the well-established brands of the major multinationals,” he recalled. Over time, however, competitive pricing and quality manufacturing helped widen market access for growers around the world.
As generics gained traction, price reductions followed. “The price of chlorpyrifos technical, which once stood around $25 per kilogram, gradually dropped below $10 per kilogram as the product matured,” Seethapathi noted. That affordability, he said, ultimately benefited growers and supported adoption even in developed markets like the U.S.
Why Generic Companies Have Thrived
Chlorpyrifos’ market evolution also highlights broader shifts in crop protection — including the increasingly influential role of generic manufacturers.
Operational agility is central to that success. “Generic players tend to be more agile than larger corporations. Lower overhead, faster decision-making, and an ability to adapt quickly to changing market dynamics are key to our resilience and continued growth,” Seethapathi said.
In a global environment where regulatory changes, supply disruptions, and price swings can happen quickly, that flexibility has given generics a strategic edge.
Lessons From Chlorpyrifos: Data, Confidence, and the Role of Generics
Few insecticides have been studied as thoroughly as chlorpyrifos. Despite controversy surrounding its safety, Seethapathi emphasized the importance of ongoing scientific review.
“Chlorpyrifos is among the most extensively studied molecules in crop protection,” he said. “Continuous data generation and regulatory review have supported its continued use in many agricultural systems.”
He also argued that maintaining trust in long-standing crop protection tools requires clear communication. “Educating the public on safety data and the scientific basis of regulatory decisions can help avoid emotional or non-scientific responses to crop protection issues.”
The chlorpyrifos story is also a reminder of the growing importance of affordability and access. Today, generics account for roughly 75% of the global crop protection market — a share that continues to climb as more molecules come off patent.
For developing economies especially, generic insecticides remain crucial. “Maintaining confidence in well-studied generics like chlorpyrifos through ongoing data generation and transparent communication is essential,” Seethapathi said.
Looking Ahead: The Future of Generics in Crop Protection
Where does this leave generic manufacturers going forward? Seethapathi sees continued innovation — even in a sector often viewed as cost-driven.
“The chlorpyrifos experience highlights the importance of continuous innovation within generics — through process improvements, data stewardship, and efficiency,” he said. The challenge ahead, he added, is balancing affordability with quality and compliance. “As regulatory pressures and input costs rise, that balance will define the next phase of the industry.”
For U.S. ag retailers, chlorpyrifos is more than a case study in product evolution — it’s a window into how generics shape markets, pricing, access, and stewardship. As more active ingredients follow the same lifecycle, understanding that trajectory will matter more than ever.
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