2(3H)-Benzoxazolone, 6-(2-thienylcarbonyl)- 2-BENZOXAZOLINONE, 6-(2-THENOYL)- 54903-14-9 6-(2-Thienoyl)-2-benzoxazolinone 6-(2-Thienylcarbonyl)-2(3H)-benzoxazolone BRN 0530495 JPB 10