2-(Pyridinyl or hydroxyphenyl)-8-substituted pyrido[2,3-d]pyrimi

2-(Pyridyl-amino)-benzoic acids and salts thereof

2-(Pyridyl-cyclopropyl)chromones

2-(R'-oxymethyl)-perimidines

2-(Substituted amino)-3-nitro-2,3-unsaturated nitrogen heterocyc

2-(Substituted heterocyclic amine)benzoic acids

2-(Substituted imino)-N-(3-substituted phenyl)-3-thiazolidinecar

2-(Substituted)amino-3-cyano-5-halo-6-(substituted)-pyrazine ant

2-(Substituted-amino)-5-(pyridinyl-nicotinonitriles, and their c

2-(Thi)oxo-3-imidazolyl-(2)-tetrahydroimidazoles

2-Acetyl quinoline thiosemicarbazones useful in treatment of gon

2-Acetyl-and 2-propionylpyridine thiosemicarbazones as antimalar

2-Acyl-4-oxo-pyrazino-isoquinoline derivatives and process for t

2-Acyl-4-oxo-pyrazino-isoquinoline derivatives and process for t

2-Acyl-4-oxo-pyrazino-isoquinoline derivatives and process for t

2-Acylaminomethyl-1,4-benzodiazepine derivatives and their salts

2-Alkoxy(and 2-alkoxyalkyl)-2-heterocyclic-thioacetamides for in

2-Alkoxy-5-(pyridinyl)pyridines and cardiotonic use thereof

2-Alkyl-4-substituted amino-quinazolines and nitrates thereof in

2-Amino-1,3-thiazines their use and preparation