1,2,3,4,10,14B-Hexahydro-pyridino[1,2-a]-dibenzo[c,f]-azepine

1,2,3,4,10,19-Hexanor-9-oxo-5,9-seco-25D-spirostan-5-oic acid

1,2,3,4,4A,5,7,7A-Octahydrothieno[3,4-b]pyrazines 6,6-dioxides

1,2,3,4,5,6,7,8,9,10-Decahydro-8-oxo-2,6-methano-3-benzazocines

1,2,3,4,5,6-Hexahydro-1-oxo or hydroxy-3-acyl-2,6-methano-3-benz

1,2,3,4,5,6-Hexahydro-2,6-methano-3-benzazocines

1,2,3,4,6,7,12,12B-Octahydro-2-benzamidoindolo[2,3-a]quinolizine

1,2,3,4,6,7,8,8A-Octahydro-6-aryl-isoquinolines and derivatives

1,2,3,4,9,9-Hexachloro-1,4-dihydro-8-hydroxy(alkoxy)-1,4 -methan

1,2,3,4-Tetrahydro-4-oxo-1-naphthylisocyanate

1,2,3,4-Tetrahydrocarbazoles

1,2,3,4-Tetrahydroisoquinoline derivatives and the preparation t

1,2,3,4-Tetrahydroisoquinoline derivatives and the preparation t

1,2,3,4-Tetrahydropyrido[4',3':4.5]thiazolo-[3,2-a]benzimidazole

1,2,3,5,6,7-Hexahydrodicyclopenta[b,e]pyridine derivatives

1,2,3,5-Tetrahydro-4H-1,5-benzodiazepine-4-ones

1,2,3-Triazole nucleosides

1,2,4,5-tetrakis (Diazidomethyl) benzene energetic polyazide

1,2,4-4H-triazole derivatives

1,2,4-Benzothiadiazines