13687-28-0 7-Methylbenzo(b)thien-4-yl methylcarbamate AI3-27384 Benzo(b)thiophene-4-ol, 7-methyl-, methylcarbamate Carbamic acid, methyl-, 7-methylbenzo(b)thien-4-yl ester ENT 27,384 MC-1175 Mobil MC-181 NSC 190977