Description

5-Fluorocytosine is a synthetic fluorinated pyrimidine analog with significant antifungal and research applications. Its primary commercial value lies in its role as a key intermediate in the synthesis of more complex fluorinated nucleosides and active pharmaceutical ingredients (APIs). This compound is essential for manufacturers and research institutions in the pharmaceutical, biotechnology, and fine chemical sectors, particularly those developing antiviral and anticancer therapeutics.

Application

• Pharmaceutical Intermediate: Critical precursor in the synthesis of fluorinated nucleoside analogs, including antiviral and anticancer drugs.
• Antifungal Research: Used as a reference standard and active ingredient in microbiological and pharmacological studies.
• Biochemical Research: Serves as a tool compound for studying nucleic acid metabolism, enzyme inhibition, and mechanism of action studies.
• Fine Chemical Synthesis: Building block for creating specialized fluorinated organic molecules in custom synthesis projects.
• Diagnostic Agent Development: Potential use in developing labeled compounds for medical imaging and diagnostic assays.

Basic Information

Product Name	5-Fluorocytosine
CAS No.	2022-87-5
Molecular Formula	C4H4FN3O
Molecular Weight	129.09 g/mol
Synonyms	5-FC; Flucytosine; 4-Amino-5-fluoro-2(1H)-pyrimidinone; 5-Fluor-4-aminopyrimidin-2-on; Ancobon; Alcobon; 5-Fluoro-4-aminopyrimidin-2(1H)-one; 2-Hydroxy-4-amino-5-fluoropyrimidine
EINECS	217-960-7

Quality Control

Our 5-Fluorocytosine is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide Certificates of Analysis (COA) with detailed results for parameters including assay, related substances, and residual solvents. The product is suitable for use under cGMP conditions for pharmaceutical intermediate applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and should be kept under dry conditions to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time corresponds to reference standard
Assay (HPLC)	≥98.0%
Related Substances (HPLC)	Total impurities ≤2.0%
Loss on Drying	≤1.0%
Residue on Ignition	≤0.1%
Heavy Metals	≤20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.