• - Select Substructure - Alkenes Alkyls Alkynes Azepines Azetidines Benzene Derivatives Benzimidazoles Benzofurans Benzothiazoles Benzothiophenes Benzotriazoles Carbazoles Carboranes Chiral Compounds Chromans / Thiochromans Cyclobutanes Cyclohexanes Cyclopentanes Cyclopropanes Dioxines & Dioxazoles Furans Furo[x,y-z]pyridines Furo[x,y-z]pyrimidines Furo[x,y-z]pyrroles Imidazo[x,y-z]pyrazines Imidazo[x,y-z]pyrazoles Imidazo[x,y-z]pyridazines Imidazo[x,y-z]pyridines Imidazo[x,y-z]pyrimidines Imidazo[x,y-z]thiazoles Imidazo[x,y-z]triazines Imidazoles Indans Indazoles Indoles Indolines Isoquinolines Isothiazoles Isoxazoles Morpholines Naphthalenes Naphthyridines Natural Products Others Oxadiazoles Oxazoles Oxazolo[x,y-z]pyridines Oxetanes Piperazines Piperidines Pyrans & Thiopyrans Pyrazines Pyrazoles Pyrazolo[x,y-z]pyridines Pyrazolo[x,y-z]pyrimidines Pyrazolo[x,y-z]triazines Pyridazines Pyridines Pyrido[x,y-z]diazepines Pyrido[x,y-z]pyrazines Pyrido[x,y-z]pyridazines Pyrido[x,y-z]pyrimidines Pyrimidines Pyrimido[x,y-z]pyrazines  [Pteridines] Pyrimido[x,y-z]pyrimidines Pyrroles Pyrrolidines Pyrrolo[x,y-z]diazepines Pyrrolo[x,y-z]imidazoles Pyrrolo[x,y-z]pyrazines Pyrrolo[x,y-z]pyrazoles Pyrrolo[x,y-z]pyridines  [Azaindoles] Pyrrolo[x,y-z]pyrimidines Pyrrolo[x,y-z]pyrroles Pyrrolo[x,y-z]triazines Pyrrolo[x,y-z]triazoles Quinazolines Quinolines Quinoxalines Synthons Tetralones Tetrazoles Thiadiazoles Thiazoles Thiazolo[x,y-z]pyridines Thiazolo[x,y-z]pyrimidines Thieno[x,y-z]pyrazines Thieno[x,y-z]pyridines Thieno[x,y-z]pyrimidines Thieno[x,y-z]pyrroles Thieno[x,y-z]thiophenes Thiophenes Transition Metals Triazines Triazoles Triazolo[x,y-z]pyrazines Triazolo[x,y-z]pyridazines Triazolo[x,y-z]pyridines Triazolo[x,y-z]pyrimidines
  

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