4-Fluoro-1H-pyrazole

4-Hydroxy-4-(pyrimidin-5-yl)cyclohexan-1-one

4-Methyl-2-[[5-(trifluoromethyl)-1,3-benzothiazol-2-yl]methyl]-1(2H)-phthalazinone

4-methyl-N-(2-phenylethynyl)-N-(phenylmethyl)-benzenesulfonamide

4-Propylbenzenesulfonic acid

4-suGalNAcα-C3-PAA

4-suGlcNAcβ-C2-PAA-biot

4,4′,4′′,4′′′-(Porphine-5,10,15,20-tetrayl)tetrakis(benzenesulfonic acid) tetrasodium salt hydrate

meso-Tetraphenylporphine-4,4′,4″,4″′-tetrasulfonic acid tetrasodium salt

4,5,6,7-Tetrahydro-4-oxobenzofuran-5-acetic acid

4,6-Dimethyl-2-(methylsulfinyl)-3-nitropyridine

4`,6`-su2LacdiNAc-C3-biot

5-[(3-Aminopropyl)amino]-2-[2-[benzyl(2-hydroxyethyl)amino]ethyl]-7,10-bis(benzyloxy)dibenzo[cd,g]indazol-6(2H)-one

5-[Bis(2-methoxyethyl)amino]-3,3-dimethyl-5-oxopentanoic acid

5-(1-(tert-Butoxycarbonyl)azetidin-3-yl)pyrazine-2-carboxylic acid

5-(2-Bromoacetyl)-2-chlorobenzenesulfonamide