Used as a key intermediate in the synthesis of kinase inhibitors, particularly in pharmaceutical research targeting cancer therapies. Its structure allows for selective binding and modification of enzyme activity, making it valuable in developing targeted drugs. The ethynyl and amino groups enable further functionalization through coupling reactions, facilitating the creation of complex bioactive molecules. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies due to its ability to enhance potency and selectivity in drug candidates.