Stable Quality 5-Azacytosine Raw Powder for Nucleoside Analogue Production

The paramount use of 5-Azacytosine is as the direct precursor for synthesizing two landmark epigenetic drugs:

• Azacitidine (5-Azacytidine): By attaching a ribose sugar to the N1 position of 5-Azacytosine, manufacturers produce Azacitidine, a drug approved for myelodysplastic syndromes (MDS).

• Decitabine (5-Aza-2'-deoxycytidine): Using a deoxyribose sugar instead yields Decitabine, used for acute myeloid leukemia (AML).

Both drugs function as DNA methyltransferase inhibitors. Consequently, the purity of the 5-Azacytosine raw material—free from isomeric contaminants like 2-Azacytosine—is directly critical for the safety and efficacy of these final oncology drugs.

Other Research Applications
Beyond pharmaceutical synthesis, high-grade 5-Azacytosine is utilized as a research chemical in epigenetics. It is employed to induce DNA demethylation in cell cultures, helping scientists study gene expression regulation. It also serves as a building block for creating novel antiviral agents and modified oligonucleotides.

Quality Specifications for Raw Material Use
Industrial-grade 5-Azacytosine intended for API manufacturing must meet strict specifications, including:

• Assay: ≥ 99.0% (by HPLC).

• Heavy Metals: ≤ 20 ppm.

• Water Content (KF): ≤ 0.5%.

• Residual Solvents: Conforming to ICH Q3C guidelines.

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 Safety and Handling
When handling this raw material, standard precautions for cytotoxic compounds are required. It should be processed in a controlled environment (e.g., isolator or fume hood) with appropriate PPE (gloves, lab coat, goggles). Direct contact with skin or inhalation of dust should be avoided due to potential genotoxicity. Spills must be managed using wet methods to prevent aerosolization.

In summary, 5-Azacytosine is a high-value, specialized raw material whose unique triazine ring structure is fundamental to producing vital epigenetic cancer therapies. Its handling requires strict quality control and safety protocols.