2 -Alkylsulphonyl-7,8-dihydro-5-hydroxy-7-oxo-pyrido[2,3-d]pyrim

2'-(R)-substituted-2'-deoxyneplanocin A derivatives

2, 3-bis(dialkylphosphino)pyrazine derivative, process of...

2,3 Diketo-piperazinocarbonylamino alkanoic acids and derivative

2,3,4,4a-tetrahydro-1H-pyrazino(1,2-a) quinoxalin-5(6H)one...

2,3-Dicyanopyrazines

2,3-Dihydrobenzofurans

2,4,5 Trifluoro pyrimidine and process for preparing

2,4,6-Trihalo-5-alkyl-and 5-alkenylsulphonylpyrimidines

2,4-diamino-(substituted-benzopyran(quinolyl,isoquinoly)methyl)p

2,4-diamino-5,6-disubstituted- and 5,6,7-trisubstituted 5-deazap

2,4-diamino-5-(1,2,3,4-tetrahydro-(substituted or unsubstituted)

2,4-Diamino-5-(4-amino and 4-dimethylamino-3,5-dimethoxy benzyl)

2,4-diamino-5-(substituted)pyrimidines, useful as antimicrobials

2,4-Diamino-5-alkyloxy-pyrimidines

2,4-Diamino-6-(hydroxymethyl)pyrido[2,3-d]pyrimidine

2,4-diamino-[4-piperidinyl]pyrimidines useful as antibacterial a

2,4-diaminopyrimidines substituted with heterobicyclomethyl radi

2,4-dioxo-3-quinazolinylaryl sulfonylureas

2,4-disubstituted pyrazine derivatives, pyrimidine derivatives,