4-Ethoxycarbonyl-3-ethoxyphenylacetic acid, also known as 4-Ethoxycaybonyl-3-ethoxyphenyiaceticacid, is a versatile chemical compound with the CAS number 99469-99-5. This compound is characterized by its white to off-white crystalline powder appearance and its unique chemical structure, featuring an ethoxycarbonyl and ethoxy substitution on a phenylacetic acid backbone.

It is primarily used as an intermediate in the synthesis of the antidiabetic drug repaglinide, a meglitinide insulin secretagogue. The compound exhibits good solubility in organic solvents such as methanol and chloroform, and it should be stored under controlled conditions to maintain its stability.

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