Standards; Pharmaceutical/API Drug Impurities/Metabolites;
                            
                         
                     
                    
                        
                            
                            
                                ITE is an endogenous AHR ligand that parenterally or orally induces FoxP3+ Treg that suppress exprimental autoimmune encephalomyelitis. ITE promotes the induction of active immunology tolerance and identifies nontoxic endogenous AHR ligands.