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CAS NO.: 64038-64-8; ethyl 2-mercapto-1H-imidazole-4-carboxylate. PROPERTIES: This sulfur-containing heterocycle features a mercapto group and an ethyl ester substituent on an imidazole ring, creating a molecule with potential applications in organic synthesis and pharmaceutical research. The ethyl 2-mercapto-1H-imidazole-4-carboxylate typically appears as a white to off-white crystalline powder with moderate solubility in polar solvents like methanol and dimethylformamide. Its molecular structure includes a thiol group that can participate in disulfide bond formation and other sulfur-centric reactions. For optimal stability and to prevent oxidation of the mercapto group, this compound should be stored at 2-8 degree Celsius in a tightly sealed container under an inert atmosphere. When handling, chemists should wear appropriate personal protective equipment including nitrile gloves and safety goggles. This compound is sensitive to moisture and oxygen, requiring careful environmental control during storage and use. In case of accidental ingestion, rinse mouth thoroughly and seek immediate medical attention. APPLICATIONS: The ethyl 2-mercapto-1H-imidazole-4-carboxylate serves as a valuable intermediate in the synthesis of pharmaceuticals, particularly those targeting enzyme inhibitors and receptor modulators. The mercapto group provides a handle for creating disulfide bridges with other thiol-containing molecules. In medicinal chemistry, this compound functions as a building block for developing antimicrobial and antiviral agents where the imidazole scaffold contributes to target binding. Additionally, the molecule finds utility in materials science as a precursor for creating conductive polymers and other advanced materials where sulfur-containing moieties impart specific electronic properties. Researchers utilizing this compound can leverage its sulfur functionality and ester protecting group to advance syntheses of complex heterocyclic systems for various applications in chemical biology and materials science.