2-(3-amino-phenyl)-naphtho[1,2-d]oxazole-5-sulfonic acid
2-(3-nitro-phenyl)-naphtho[1,2-d]oxazole-5-sulfonyl chloride
2-(3-nitro-phenyl)-naphtho[1,2-d]oxazole-5-thiosulfonic acid S-naphtho[1,2-d]oxazol-2-yl ester
2-(3-nitro-phenyl)-naphtho[1,2-d]oxazole-5-sulfonic acid 4-p-tolyl-thiazol-2-ylamide
2-(3-nitro-phenyl)-naphtho[1,2-d]oxazole-5-sulfonic acid 4-phenyl-thiazol-2-ylamide