Ethyl 2-(4-amino-1H-pyrazol-1-yl)propanoate hydrochloride is a synthetic organic compound featuring a pyrazole core with an amino substituent and an ester-functionalized propanoate side chain, rendered as a hydrochloride salt for enhanced stability. This intermediate is particularly valuable in pharmaceutical and agrochemical research due to its reactive 4-amino-1H-pyrazol-1-yl moiety, which facilitates further functionalization. The hydrochloride form improves solubility in polar solvents, streamlining purification and handling. Its structural versatility makes it suitable for constructing heterocyclic frameworks or as a precursor in medicinal chemistry applications. The compound is typically characterized by high purity (>95%) and consistent batch-to-batch reproducibility, ensuring reliability in synthetic workflows.