Displaying 16 results of Chloramphenicol Impurities Chloramphenicol is an antibiotic commonly used to treat bacterial infections. However, during the manufacturing process, impurities may be introduced into the final product. These impurities can potentially cause adverse reactions in patients, which is why it is important to monitor and control their levels. Some common chloramphenicol impurities include nitrosochloramphenicol, dichloramphenicol, and methylchloramphenicol.