-Aminopropionitrile (CAS No 151-18-8) is a research compound primarily used in biomedical studies focusing on connective tissue disorders and fibrosis Originating from studies of lathyrism it acts by inhibiting lysyl oxidase an enzyme crucial for cross-linking collagen and elastin in the extracellular matrix This inhibition disrupts normal tissue structure and function making it a valuable tool in research on tissue fibrosis and related pathologies In vitro its activity is observed in the nanomolar to low micromolar range highlighting its potency It is frequently employed in cell models and animal studies to explore mechanisms of fibrosis test potential antifibrotic agents and assess the impact on extracellular matrix components -Aminopropionitrile is also utilized in drug screening processes to evaluate the efficacy of novel therapeutic candidates targeting connective tissue disorders Experimental concentrations typically depend on the specific research design