1,3-benzoxazole 273-53-0 InChI=1/C7H5NO/c1-2-4-7-6(3-1)8-5-9-7/h1-5 ZINC00404297 AI3-05743 1-Oxa-3-aza-1H-indene 1-Oxa-3-azaindene Benzoxazole NSC3982 Usaf ek-5017 WLN: T56 BN DOJ B11702_ALDRICH NSC 3982 EINECS 205-988-9 CHEBI:38814