Overview
Diminazene is an antiprotozoal drug belonging to the diamidine class, widely used in veterinary medicine. It is particularly effective against Trypanosoma and Babesia species, which cause diseases like nagana and babesiosis in cattle, sheep, and other livestock. The compound was first synthesized in the mid-20th century and remains a critical tool in tropical and subtropical regions where these parasites are endemic. As a trypanocide, diminazene works by binding to the DNA of protozoan parasites, disrupting their replication. It is often administered via intramuscular injection and is available as diminazene aceturate, a salt form that enhances solubility. Despite its veterinary importance, it is not approved for human use due to toxicity risks.
Physical and Chemical Properties
Diminazene is a yellow to orange crystalline powder with a molecular weight of 281.32 g/mol. It is soluble in water and DMSO but only slightly soluble in ethanol, which influences its formulation for injections. The compound decomposes at temperatures above 200°C, and its stability is optimal when stored in dry, dark conditions. Its aromatic diamidine structure is key to its mechanism of action, allowing it to intercalate into parasitic DNA. The aceturate salt form (diminazene aceturate) is preferred for pharmaceutical use due to improved bioavailability. Analytical methods like HPLC are commonly employed to verify purity, which typically ranges from 98% to 99% for veterinary-grade products.
Main Applications
The primary application of diminazene is in veterinary medicine, where it is used to treat trypanosomiasis (e.g., Trypanosoma brucei, T. congolense) and babesiosis (Babesia bovis, B. bigemina) in livestock. These diseases cause significant economic losses in Africa, Asia, and South America by reducing milk yield, fertility, and draft power in infected animals. Diminazene is often combined with other drugs like phenanthridine to broaden its spectrum. It is administered via intramuscular injection at doses ranging from 3.5 to 7 mg/kg body weight, depending on the parasite species. Resistance has been reported in some regions, prompting research into combination therapies and alternative compounds.
Safety and Storage
Diminazene is toxic to humans and requires strict handling precautions. Personal protective equipment (PPE), including gloves and masks, should be worn to avoid skin contact or inhalation. Accidental exposure can cause nausea, dizziness, or organ damage, and medical attention is advised. For storage, the compound should be kept in a cool, dry place, protected from light and moisture. Original containers with tight seals are recommended to prevent degradation. Shelf life is typically 2-3 years when stored correctly. Disposal must comply with local hazardous waste regulations due to its environmental toxicity.
B2B Procurement Guide
When sourcing diminazene for veterinary use, prioritize suppliers with GMP certification to ensure quality and traceability. Key specifications to verify include CAS number (908-54-3), purity (≥98%), and absence of heavy metals. Bulk purchases (25 kg drums) are common, with prices ranging from $50 to $150/kg depending on volume and supplier location. Procurement teams should request certificates of analysis (CoA) and stability data. Logistics must account for temperature-sensitive transport if applicable. For regulatory compliance, ensure the product meets veterinary pharmacopoeia standards (e.g., USP, EP) in the target market.
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