9H-Xanthene 92-83-1 BRN 0133939 10H-9-Oxaanthracene Xanthan NSC46931 5-17-02-00252 (Beilstein Handbook Reference) AI3-01544 C01464 EINECS 202-194-4 NSC 46931 CHEBI:10057 ZINC00967535 InChI=1/C13H10O/c1-3-7-12-10(5-1)9-11-6-2-4-8-13(11)14-12/h1-8H,9H Xanthene 95470_FLUKA dibenzo[a,e]pyran X201_ALDRICH