2-[1-hydroxy-4-(thiophen-2-ylsulfonylamino)naphthalen-2-yl]sulfanylacetic acid 2-[[1-hydroxy-4-(2-thienylsulfonylamino)-2-naphthyl]sulfanyl]acetic acid 2-[[1-hydroxy-4-(2-thienylsulfonylamino)-2-naphthyl]thio]acetic acid 2-[1-hydroxy-4-(thiophen-2-ylsulfonylamino)naphthalen-2-yl]sulfanylethanoic acid EU-0048437 AP-906/41639451