3H-Phenoxazin-3-one, 7-hydroxy- 4-27-00-02263 (Beilstein Handbook Reference) 635-78-9 7-Hydroxy-3H-phenoxazin-3-one 7-Hydroxyphenoxazin-3-one BRN 0174850 EINECS 211-241-8 NSC 12097 Resorufin Resorufine