Molecular Weight - Formula - Match Compounds Sub-Structure Exact Match Open here and redraw the structure. Search Search Results Total 2305 Results 2 Per page 10 20 30 40 50 60 70 80 90 100 ID 505 Acidic Normal Phase Secobarbital CHIRALPAK® AY-3 ( 4.6 x 150 mm 3 µm ) n-hexane / ethanol = 95 / 5 ID 540 Acidic Normal Phase Secobarbital CHIRALPAK® AZ-H ( 4.6 x 250 mm 5 µm ) n-hexane / ethanol = 80 / 20