CFTR corrector 13 (SVQ18) is a cystic fibrosis transmembrane conductance regulator ( CFTR ) corrector ( EC 50 =3.14 μM). CFTR corrector 13 enhances the function of CFTR channels, especially when used in combination with Lumacaftor , it can produce a dose-dependent increase in CFTR function. CFTR corrector 13 can be used in the study of cystic fibrosis (CF) and other CFTR -related diseases.