“…IR (KBr) cm −1 : 2210, 1630. MS (EI, 70 eV): m/z (%) = 267 (M + , 27), 266 (29), 265 (69), 238 (19), 232 (20), 231 (77), 230 (10), 203 (57), 202 (100), 201 (24), 200 (11), 165 (10), 163 (33), 136 (16), 102 (24), 101 (32), 100 (15), 99 (21), 77 (18), 75 (11), 51 (12). C 17 H 11 ClO (266.72): calcd C 76.55,H 4.16,Cl 13.29;found C 76.36,H 4.07,Cl 13.23.…”