The screening for new inhibitors of steroid sulfatase requires an efficient
test system. To overcome the shortcomings of the available discontinuous f
luorimetric assay, several coumarin-type compounds were investigated as pot
ential new substrates. 3,4-Benzocoumarin 7-O-sulfate was found to have appr
opriate substrate properties for the establishment of the first direct cont
inuous assay of steroid sulfatase. (C) 2000 Elsevier Science Ltd. All right
s reserved.