6-FLUOROBENZO[D]ISOXAZOLE-3-CARBOXYLIC ACID ethyl 6-bromobenzo[d]isoxazole-3-carboxylate 6-METHOXYBENZO[D]ISOXAZOLE-3-CARBOXYLIC ACID ETHYL 6-HYDROXYBENZO[D]ISOXAZOLE-3-CARBOXYLATE ethyl 6-methoxybenzo[d]isoxazole-3-carboxylate 6-CHLOROBENZO[D]ISOXAZOLE-3-CARBOXYLIC ACID 1,2-BENZISOXAZOLE-3-CARBOXYLIC ACID