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    —— 4-nitro-benzaldehyde <i>O</i>-[2-(4-methyl-piperazin-1-yl)-ethyl]-oxime 47174-63-0 C14H20N4O3
    —— 4-[4-(3-Chloro-5-trifluoromethyl-pyridin-2-yloxy)-phenoxy]-pentanoic acid 2-chloro-phenyl ester 72222-74-3 C23H18Cl2F3NO4
    —— 4-[4-chloro-6-(4-chloro-phenyl)-[1,3,5]triazin-2-yl]-benzene-1,3-diol 7296-14-2 C15H9Cl2N3O2
    —— 4-[(E)-6-Amino-3,4-dihydro-2H-benzo[1,4]oxazin-7-ylimino]-2-methyl-cyclohexa-2,5-dienone 41316-83-0 C15H15N3O2
    —— 4-cyclohexanecarbonyl-8-nitro-1-phenyl-3,4-dihydro-1<i>H</i>-benzo[<i>e</i>][1,4]diazepine-2,5-dione 53277-78-4 C22H21N3O5
    —— 4-dimethylamino-5-nitro-2-phenyl-2<i>H</i>-pyridazin-3-one 6381-44-8 C12H12N4O3
    —— 4-<i>sec</i>-butyl-2-methyl-5-methylcarbamoyloxy-thiazole 37084-87-0 C10H16N2O2S
    —— 4-amino-6-<i>tert</i>-butyl-5-imino-4,5-dihydro-2<i>H</i>-[1,2,4]triazine-3-thione 33416-43-2 C7H13N5S
    —— 4-(1-benzyl-5-oxo-2,5-dihydro-1<i>H</i>-pyrazol-3-ylamino)-benzenesulfonic acid 3-pentadecyl-phenyl ester 55034-53-2 C37H49N3O4S
    —— 4-Biphenyl-4-yl-3,N-dihydroxy-butyrimidic acid 23242-96-8 C16H17NO3
    —— 4-(6-chloroimidazo[2,1-b]thiazol-5-yl)-N-(4-((dimethylamino)methyl)phenyl)pyrimidin-2-amine 1257079-05-2 C18H17ClN6S
    —— 4-Iodomethyl-8-oxo-7-phenylacetylamino-5-thia-1-aza-bicyclo[4.2.0]octane-2-carboxylic acid tert-butyl ester 58075-17-5 C20H25IN2O4S
    —— {4-[2-(4-acetylamino-[1,3,5]triazin-2-ylamino)-phenoxy]-phenyl}-acetic acid 98904-77-9 C19H17N5O4
    —— (4-{2-Hydroxy-3-[4-(2-methoxy-phenyl)-piperazin-1-yl]-propoxy}-phenyl)-urea 31994-02-2 C21H28N4O4
    —— 4-(4-chloro-<i>N</i>-<i>p</i>-tolylacetyl-anilino)-piperidine-1-carboxylic acid ethyl ester 63258-51-5 C23H27ClN2O3
    —— (4cR,9bS)-4b,4c,9b,9c-Tetrahydro-dibenzo[d,d']cyclobuta[1,2-b;3,4-b']dithiophene 25558-21-8 C16H12S2
    —— 4-Aethyl-3-aethylmercapto-5-<4-sulfamoyl-phenyl>-4H-<1,2,4>triazol 30902-32-0 C12H16N4O2S2
    —— 4-Methyl-5,5-diphenyl-pent-4-en-1-ol 29313-45-9 C18H20O
    —— 4-bromo-2-xylosylisoquinolinium bromide 87777-05-7 Br*C14H15BrNO4
    —— 4-(2-butoxy-ethyl)-2-oxo-2,3-dihydro-thiazole-5-carboxylic acid methyl ester 72537-02-1 C11H17NO4S
    —— 4-(2-propionyloxy-ethylamino)-benzo[<i>e</i>]perimidin-7-one 53057-52-6 C20H17N3O3
    —— 4,5-dimethyl-3,3a-dihydro-pyrazolo[1,5-<i>a</i>]pyridine-2,3-dicarboxylic acid dimethyl ester 35116-69-9 C13H16N2O4
    —— 4-(6-Methoxy-1,2,3,4-tetrahydro-isoquinolin-1-yl)-phenol; hydrochloride 33769-32-3 C16H17NO2*ClH
    —— 4-(E-1-Naphthylmethylenamino)-pyridiniumiodid 30832-06-5 C17H15N2*I
    —— 4-dimethylamino-1-(3,5-dichlorophenyl)-2-methylsulfanyl-1,3-diazabuta-1,3-diene 1262446-24-1 C11H13Cl2N3S
    —— 4'-chloro-7-O-β-D-glucoside flavone 1186489-21-3 C21H19ClO8
    —— 4-azido-4-{[(1-{3-methyl-1-[(2-trimethylsilanylethoxycarbonylmethyl)-carbamoyl]-butylcarbamoyl}-2-phenyl-ethylcarbamoyl)-methyl]-carbamoyl}-butyric acid 9H-fluoren-9-ylmethyl ester 1028772-28-2 C43H55N7O8Si
    —— 4H-1-Benzopyran-4-one,3-(2,5-dihydroxy-3,4-dimethoxyphenyl)-6-hydroxy-7-methoxy- 89635-17-6 C18H16O8
    —— 4,5-Ethylenedioxy<3-(2-phthalimidoethyl)>indole 108097-97-8 C20H16N2O4
    —— 4β-hydroxy-2,3-dihydrowithanolide E 60197-65-1 C28H40O8
    —— 4-[6-methoxy-1'-(2-phenoxyethyl)-4,9-dihydrospiro[β-carboline-1,3'-pyrrolidin]-2(3H)-yl]butanamide 853019-11-1 C27H34N4O3
    —— 4-(4,5-dimethoxy-2-nitrophenyl)-6-(phenylsulfonyl)-1,2-dihydropyrrolo[3,4-c]carbazol-3(6H)-one 1269632-39-4 C28H21N3O7S
    —— 4,4'''''-Diiodo-3,2',2'''',3'''''-tetramethoxy-[1,4';1',1'';4'',1''';4''',1'''';4'''',1''''']sexiphenyl 243465-09-0 C40H32I2O4
    —— 4-(3-chloro-6-hydroxy-2,4-dimethyl-phenyl)-butan-1-ol 100249-01-2 C12H17ClO2
    —— 4-(1H-pyrazol-1-yl)-1-(pyridin-4-yl)pyridinium chloride hydrochloride 1357589-54-8 C13H11N4*ClH*Cl
    —— 4-butoxymethyl-hept-1-en-6-yne 53497-93-1 C12H20O
    —— (4-bromo-1H-pyrrolo[2,3-b]pyridin-2-yl)acetic acid trifluoroacetate 1014613-10-5 C2HF3O2*C9H7BrN2O2
    —— 4-((4,5-diphenyl-1-trityl-1H-imidazol-2-yl)(5-ethoxy-2-fluoro-3-isopropoxyphenyl)methylamino)benzonitrile 891842-30-1 C53H45FN4O2
    —— 4-methyl-1-azabicyclo[4.2.0]oct-4-en-8-one 1233847-55-6 C8H11NO
    —— 4-[(3E)-(S)-2-{2-[1-(2-ethoxy-2-oxoethyl)cyclopropyl]ethyl}-4-(2-{[4-(trifluoromethoxy)benzyl]oxy}-phenyl)but-3-en-1-yl]benzoic acid 934810-14-7 C34H35F3O6
    —— 4,4,5-trideuterio-3,3-dimethyl-hex-5-en-2-ol 67682-12-6 C8H16O
    —— 4-Biphenyl-4-yl-2-phenyl-furan 85658-01-1 C22H16O
    —— 4-[(2R)-2-({[(2S)-3-(9H-carbazol-4-yloxy)-2-hydroxypropyl]amino}methyl)-3,4-dihydro-2H-chromen-6-yl]benzoic acid 437764-41-5 C32H30N2O5
    —— 4-(1,3 dimethyl-2-oxo-hexahydro-pyrimidin-5-yl)-benzoic acid methyl ester 281234-50-2 C14H18N2O3
    —— 4-[{[1-(4-Amino-phenyl)-1-p-tolyl-meth-(E)-ylidene]-hydrazono}-(4-ethyl-phenyl)-methyl]-2-methyl-phenylamine 71969-10-3 C30H30N4
    —— 4-({2-[(1R,4S)-2-azabicyclo[2.2.1]hept-2-yl]-2-phenylpropanoyl}oxy)-1,1-dimethylpiperidinium iodide 1034911-94-8 C22H33N2O2*I
    —— 4-bromo-2-(p-chlorophenyl)-5-[(β-bromo-β,α,α-trifluoro)-ethylthio]pyrrole-3-carbonitrile 185134-62-7 C13H6Br2ClF3N2S
    —— 4-bromo-5-[(6-chloro-3-{[4-(methylsulfonyl)piperazin-1-yl]methyl}pyridin-2-yl)oxy]-1-(cyclopropylmethyl)-1H-benzotriazole 1268313-75-2 C21H24BrClN6O3S
    —— 4,8-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,6-bis(triisopropylsilyl)benzo[1,2-b:4,5-b']difuran 1403834-43-4 C40H68B2O6Si2
    —— (4-(3-(4-((2R)-2-amino-3,3-dimethylbutanoyl)-1-piperazinyl)propoxy)phenyl)(cyclopropyl)methanone 360550-99-8 C23H35N3O3