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    —— 4-(3-Methyl-piperidin-1-yl)-2-phenyl-2-pyridin-2-yl-butyramide 61837-29-4 C21H27N3O
    —— 4-Propyl-cyclohex-3-enecarboxylic acid 4-cyano-phenyl ester 116064-83-6 C17H19NO2
    —— 4-(3-N,N-Diethylaminopropylamino)-3-hexanoylamino-1,2-naphthochinon 26260-98-0 C23H33N3O3
    —— 4-(22-methoxy-docosylidene)-3-(21-methoxy-heneicosyl)-oxetan-2-one 41624-83-3 C48H92O4
    —— 4b-(4-Methoxy-phenyl)-hexahydro-cyclopropa[cd]pentalen-1-one 29272-06-8 C15H16O2
    —— (4-allyloxy-6-chloro-[1,3,5]triazin-2-yl)-<i>sec</i>-butyl-amine 4462-81-1 C10H15ClN4O
    —— 4-(3,5-dichloro-4-fluoro-phenyl)-1,2-dimethyl-[1,2,4]triazolidine-3,5-dione 66931-60-0 C10H8Cl2FN3O2
    —— 4-(2-chloro-anilino)-6-ethylamino-[1,3,5]triazine-2-sulfenyl chloride 91193-88-3 C11H11Cl2N5S
    —— 4-{4-[4,6-bis-(2,4-dimethyl-phenyl)-[1,3,5]triazin-2-yl]-3-hydroxy-phenoxy}-butyric acid ethyl ester 1440-09-1 C31H33N3O4
    —— (4-Hydroxy-2-methyl-5-nitro-benzyl)-methyl-carbamic acid ethyl ester 91558-85-9 C12H16N2O5
    —— 4,11-dihydroxy-2-styryl-anthra[2,3-<i>d</i>]oxazole-5,10-dione 36442-50-9 C23H13NO5
    —— 4'-hydroxy-3,5 diiodo-4-(2-N,N-dimethylamino-ethoxy)benzophenon 147030-54-4 C17H17I2NO3
    —— 4-styryl-3-phenylacetamido 2-oxo-1-azetidine sulfonic acid tetrabutylammonium salt 111540-29-5 C16H36N*C19H17N2O5S
    —— 4-chloro-2,2,5,5-tetramethyl-1,2-oxaphosphol-3-en-2-ium chloride 81607-00-3 C7H13ClOP*Cl
    —— 4-(4-benzhydryl-piperazin-1-ylmethyl)-<i>N</i>-isobutyl-2-nitro-aniline 68740-19-2 C28H34N4O2
    —— 4-benzothiazol-2-ylazo-[1]naphthylamine 86771-96-2 C17H12N4S
    —— 4-chloro-3-(2-methylphenyl)pyridine 1578241-93-6 C12H10ClN
    —— 4a-(4-methoxybenzyl)-2,3,4,4a-tetrahydro-1H-carbazole 1350845-82-7 C20H21NO
    —— (4aS,8aS,9S,9aR,10aR)-Decahydro-1,8,10-trioxa-anthracen-9-ol 175777-51-2 C11H18O4
    —— [4-(Dipropoxy-phosphorylmethyl)-2,5-dihydroxy-benzyl]-phosphonic acid dipropyl ester 62277-64-9 C20H36O8P2
    —— 4,5-dimethyl-2-phenethyl-1,2-dihydro-pyrazol-3-one 55294-34-3 C13H16N2O
    —— 4-chloro-3-[5-oxo-1-(2,2,2-trifluoro-1-phenyl-ethyl)-2,5-dihydro-1<i>H</i>-pyrazol-3-ylamino]-benzenesulfonic acid 4-<i>tert</i>-butyl-2-cyclopentyl-phenyl ester 55034-54-3 C32H33ClF3N3O4S
    —— 4-(3-butyl-4-methoxy-phenyl)-4-oxo-butyric acid 101499-60-9 C15H20O4
    —— 4-benzyl-2-dimethylamino-5-trifluoroacetylthiazole 89563-67-7 C14H13F3N2OS
    —— 4-(5-cyclopentyl-3-oxopyrazolidin-1-yl)-2-methylbenzonitrile 1246765-08-1 C16H19N3O
    —— (4S,7R)-7-((S)-2,2,5,5-Tetramethyl-[1,3]dioxan-4-yl)-octan-4-ol 881897-20-7 C16H32O3
    —— 4-(1,5-dinitro-[1,3,5]triazepan-3-yl)-butyric acid 14439-81-7 C8H15N5O6
    —— 4-ethylsulfanyl-6-(4-phenyl-piperazin-1-yl)-[1,3,5]triazin-2-ylamine 5593-34-0 C15H20N6S
    —— (4-acetamidophenyl)-(phenylcarbamothioyl)azanide;nickel(2+) 206990-96-7 C30H28N6NiO2S2
    —— 4,8-Bis(diisopropylamino)-2,6-bis(2'-hydroxyethyl-2''-methoxyethylamino)-pyrimido<5,4-d>pyrimidin 54093-46-8 C28H52N8O4
    —— 4′-(4-isopropylphenyl)-2′′,3′′-diphenyl-1′-methyldispiro[indole-3,2′-pyrrolidine-3′,5′′-[1,3]thiazolane]-2(1H),4′′-dione 1627745-62-3 C35H33N3O2S
    —— 4-nitrobenzyl N2-((S)-2-(2-aminoacetamido)-3-(4-chlorophenyl)propanoyl)-L-seryl-L-prolyl-L-phenylalanyl-Nw-nitro-L-argininate 2,2,2-trifluoroacetate 74105-29-6 C2HF3O2*C41H50ClN11O12
    —— 4-{[4-(quinoxalin-6-yl)pyridin-2-yl]methyl}piperazin-2-one 1225280-23-8 C18H17N5O
    —— 4-(4-(tert-butyl)phenyl)-6-(4-fluorophenyl)-1-tosyl-2,5-dihydro-1H-azepine 1638238-90-0 C29H30FNO2S
    —— (4-chloro-benzenesulfonyl)-(4-chloro-phenyl)-acetonitrile 100873-00-5 C14H9Cl2NO2S
    —— 4-(4-hexyl-1-phenethyl-piperidin-4-yl)-morpholine 13681-03-3 C23H38N2O
    —— 4-(4-cyano-N-[6-(4-cyano-N-(4-cyanophenyl)anilino)-3,8-di(propan-2-yl)pyren-1-yl]anilino)benzonitrile 1312165-41-5 C50H36N6
    —— 4α-acetoxy-19-(tert-butyldimethylsilyloxy)androst-5-en-17-one 383911-16-8 C27H44O4Si
    —— (4-Hydroxy-phenyl)-{2-oxo-3-[2-(1,7,7-trimethyl-bicyclo[2.2.1]hept-2-yloxy)-acetylamino]-azetidin-1-yl}-acetic acid 59510-00-8 C23H30N2O6
    —— (4-hydroxy-phenyl)-{3-[2-(4-nitro-phenyl)-acetylamino]-2-oxo-azetidin-1-yl}-acetic acid 59509-99-8 C19H17N3O7
    —— 4-(H'-1'-Naphthyl-ureido)-penicillansaeure N-aethylpiperidin 26774-95-8 C7H15N*C19H19N3O4S
    —— 4-(4-phenyl-6-<i>p</i>-tolyloxy-[1,3,5]triazin-2-yl)-benzene-1,3-diol 4718-36-9 C22H17N3O3
    —— (4aR,10aS)-6-Methoxy-3,9,9-trimethyl-1,3,4,4a,9,10a-hexahydro-2H-10-oxa-3-aza-phenanthrene; hydrochloride 69567-93-7 C16H23NO2*ClH
    —— 4-{[1-(2-Chloro-phenyl)-meth-(Z)-ylidene]-amino}-6-octyl-benzene-1,3-diol 23771-85-9 C21H26ClNO2
    —— 4-(chloromethyl)-N-[4-(1,1,1,2,3,3,3-heptafluoropropan-2-yl)-2,6-dimethyl-phenyl]benzamide 1267507-58-3 C19H15ClF7NO
    —— 4-{2-[3-(3-Chloro-2-methyl-1H-indol-4-yloxy)-2-hydroxy-propylamino]-2-methyl-propyl}-phenol 69907-10-4 C22H27ClN2O3
    —— 4,8-Bis(dipropylamino)-2,6-bis(2',3'-dihydroxypropyl-2''-methoxyethylamino)-pyrimido<5,4-d>pyrimidin 54094-03-0 C30H56N8O6
    —— 4-diethoxyphosphoryloxy-2-ethoxy-thiazole-5-carboxylic acid isopropyl ester 36751-11-8 C13H22NO7PS
    —— 4-methyl-2-epoxymethyloxy-thioxanthone 215173-02-7 C17H14O3S
    —— 4-Cyano-3,5-dichlor-2-methylisothiazolium 71091-45-7 C5H3Cl2N2S