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ethyl 4-methylpiperazine-2-carboxylate; CAS No.: 63285-60-9; ethyl 4-methylpiperazine-2-carboxylate. PROPERTIES: This methylated piperazine carboxylate ester has molecular formula C9H16N2O2. It appears as a pale yellow oil. The ethyl 4-methylpiperazine-2-carboxylate demonstrates moderate solubility in common organic solvents like methanol and ethyl acetate but limited water solubility. Its boiling point ranges between 160-165 C at 760 mmHg, and it has a molecular weight of approximately 176.24 g/mol. When handling, care should be taken to avoid skin contact and use of proper respiratory protection. Storage should be in a tightly sealed container at room temperature, protected from light and moisture. The compound is sensitive to strong acids and may hydrolyze to the corresponding carboxylic acid upon exposure to aqueous conditions. In case of spillage, absorb with inert material and dispose of in accordance with local regulations. APPLICATIONS: The ethyl 4-methylpiperazine-2-carboxylate serves as a key intermediate in the synthesis of serotonin receptor antagonists for psychiatric disorders where the piperazine ring provides essential hydrogen bonding interactions with receptor subtypes (as reported in medicinal chemistry literature). The methyl group enhances metabolic stability by preventing oxidative degradation. Additionally, the compound functions as a building block in the preparation of liquid crystal materials with specific dielectric properties, useful in display technologies with response times below 20 milliseconds as described in materials chemistry journals. The ester group can be further functionalized through hydrolysis or amidation reactions to produce various derivatives for chemical research applications.