we investigated interactions of phosphonoformic acid ( pfa ) , phosphonoacetic acid ( paa ) , and other phosphonyl derivatives with the na+ gradient [ na+ extravesicular greater than na+ intravesicular ; nao+ greater than na+i ] -dependent transport system for phosphate ( pi ) in renal cortical brush border membrane vesicles ( bbmv ) .
C0070895
phosphonoformic acid
C0031681
phosphonoacetic acid