Used in peptide synthesis as a protected amino acid derivative, Ac-Ile-OMe serves as a building block for constructing larger peptides with controlled sequence and stereochemistry. The acetyl (Ac) group protects the amino terminus, while the methyl ester (OMe) masks the carboxylic acid, allowing selective deprotection and coupling in stepwise synthesis. It is particularly useful in solid-phase and solution-phase peptide synthesis for developing pharmaceuticals, biochemical probes, and enzyme substrates. Its modified functional groups enhance solubility and stability during synthetic procedures, making it valuable in medicinal chemistry and drug development.