1-(p-Arsenophenyl)urea 1-(p-Arsenosophenyl)urea 2490-89-3 Arsine, 4-carbamidophenyloxo- Carbarsone oxide Chemotherapy center No. 606 NSC 12693 Urea, (4-arsenosophenyl)- (9CI) Urea, (p-arsenosophenyl)- (8CI) Urea, 1-(p-arsenosophenyl) p-Carbamidophenyl arsenous acid p-Carbamidophenyl arsenous oxide