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Fluorinated pyridine intermediates are becoming a hot topic.
2025-12-19
As of 2012, the main quinolone antibacterial agents developed and put into mass production in China included norfloxacin, ciprofloxacin, ofloxacin, enoxacin, lomefloxacin, and fleroxacin. Among these, norfloxacin, ciprofloxacin, and ofloxacin were produced in larger quantities, accounting for approximately 98% of the country's total output of fluoroquinolone antibacterials.
Quinolones are generally synthesized by condensing fluorinated quinoline compounds—obtained through the synthesis of fluorinated benzene rings—with piperazine (or methylpiperazine). Given China's abundant reserves of fluorite, it is one of the world's largest producers of fluorine-containing pharmaceuticals and intermediates, with over 80% of its fluorine-containing intermediates being exported. Overall, China's development of fluorobenzene intermediates started relatively early, and production capacity in this area is generally excessive; the development of trifluorotoluene intermediates, on the other hand, started later but is progressing rapidly. As for heterocyclic aromatic compounds, particularly fluorinated pyridines, only a few research institutions and manufacturers in China currently possess the technology for synthesizing fluorinated pyridine intermediates. Therefore, fluorinated pyridine intermediates will become one of the primary focuses of domestic research and development in fluorine-containing intermediates over the coming years.
China has become a major producer of antipyretic and analgesic drugs. The output of such products as aspirin, paracetamol, and aminopyrine all exceeds 10,000 tons, while the output of products like phenacetin, aminopyrine, and antipyrine surpasses 1,000 tons. Currently, China’s production of antipyretic and analgesic drugs is growing rapidly, and it is projected to continue expanding at a rate of around 8% in the future. There are numerous manufacturers producing intermediates that serve as key inputs for the synthesis of these antipyretic and analgesic drugs. As demand for antipyretic and analgesic drugs continues to rise, their intermediates have also experienced substantial growth.
In 2003, domestic consumption of paracetamol increased rapidly, and exports also showed a strong growth trend, reaching 28,163 tons—a year-on-year increase of roughly 100%. Although the pace of export growth slowed somewhat in the first half of 2004, exports still saw some growth. From January to May 2004, paracetamol exports totaled 12,501 tons, slightly higher than the same period last year. p-Aminophenol, an important intermediate in the synthesis of paracetamol, has been experiencing rapid growth. China’s annual output of p-aminophenol currently stands at 32,000 tons. It is projected that by 2005, domestic paracetamol production will exceed 50,000 tons, with the pharmaceutical industry consuming 45,000 tons of p-aminophenol. Coupled with its applications in other sectors, total demand for p-aminophenol in 2005 is expected to reach approximately 50,000 tons, leaving a significant market gap and offering broad prospects for development and utilization.
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2025-12-02
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