Overview
Emetine is an alkaloid extracted from the roots of the ipecac plant (Carapichea ipecacuanha), native to South America. It has been used for centuries in traditional medicine, particularly as an emetic and for treating parasitic infections like amoebic dysentery. Today, its use in clinical medicine has declined due to its toxicity, but it remains valuable in biochemical research. Emetine functions by inhibiting protein synthesis in eukaryotic cells, making it a potent tool for studying cellular processes. Its derivatives, such as emetine hydrochloride, are more commonly used in laboratory settings due to their stability and solubility.
Physical and Chemical Properties
Emetine is a white or slightly yellowish crystalline powder with a bitter taste. Its hydrochloride form is more stable and commonly used in research. The compound is soluble in water, alcohol, and chloroform, facilitating its use in various formulations. The molecular structure of emetine includes a quinoline ring system, contributing to its biological activity. Its melting point ranges between 74-76°C for the hydrochloride form, and it decomposes upon heating to higher temperatures. The compound is sensitive to light and moisture, requiring careful storage.
Main Applications
Historically, emetine was a key treatment for amoebic dysentery, caused by the parasite Entamoeba histolytica. Its ability to inhibit protein synthesis made it effective against the parasite, though its use has been largely replaced by safer alternatives like metronidazole. In modern research, emetine is used as a biochemical tool to study protein synthesis inhibition and cellular apoptosis. It is also employed in pharmacological studies to investigate its effects on cardiac and gastrointestinal systems, given its high toxicity profile.
Safety and Storage
Emetine is highly toxic and must be handled with extreme care. Exposure can lead to severe cardiac effects, including arrhythmias, as well as gastrointestinal distress. Proper personal protective equipment (PPE) such as gloves and lab coats should be worn when handling the compound. Storage conditions are critical to maintaining emetine's stability. It should be kept in a cool, dry place, protected from light and moisture. Containers should be tightly sealed and labeled with hazard warnings to prevent accidental exposure.
B2B Procurement Guide
When procuring emetine for research or industrial use, buyers should prioritize suppliers with a proven track record in pharmaceutical-grade chemicals. Verify the CAS number (483-18-1) and request certificates of analysis (CoA) to confirm purity and composition. Prices vary based on purity and quantity, typically ranging from $50 to $200 per gram. Bulk purchases may qualify for discounts, but ensure proper storage and handling protocols are in place to maintain compound integrity. Regulatory compliance, especially for international shipments, should also be confirmed.
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