Description

4-Thiouracil is a heterocyclic organic compound belonging to the pyrimidine class, serving as a sulfur analog of uracil. This compound is a versatile building block and intermediate of significant interest in pharmaceutical research and fine chemical synthesis. It is primarily utilized by research institutions and manufacturers in the life sciences and specialty chemical sectors for developing novel therapeutic agents and biochemical tools.

Application

• Pharmaceutical Intermediate: Key starting material in the synthesis of nucleoside analogs and other active pharmaceutical ingredients (APIs).
• Biochemical Research: Used as a substrate or inhibitor in enzymatic studies and metabolic pathway investigations.
• Agrochemical Development: Serves as a precursor in the research and synthesis of novel crop protection agents.
• Material Science: Potential building block for organic electronic materials and specialty polymers.
• Academic & Industrial R&D: Fundamental compound for organic synthesis and method development in university and corporate laboratories.

Basic Information

Product Name	4-Thiouracil
CAS No.	591-28-6
Molecular Formula	C4H4N2OS
Molecular Weight	128.15 g/mol
Synonyms	2,4-Dihydroxy-6-mercaptopyrimidine; 6-Mercapto-2,4-pyrimidinediol; 2,4(1H,3H)-Pyrimidinedithione; 4-Mercaptouracil; 4-Thio-2,6-dihydroxypyrimidine; Thiouracil (unspecified); NSC 756; Uracil, 4-thio-
EINECS	209-719-6

Quality Control

Our 4-Thiouracil is produced under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including identification, purity assay, and impurity profiling. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to pale yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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