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    —— (4-trimethylsilanyloxy-2-trimethylsilanylsulfanyl-pyrimidin-5-yl)-acetic acid ethyl ester 51255-30-2 C14H26N2O3SSi2
    —— 4-bromo-3-methylthioindole 1401844-08-3 C9H8BrNS
    —— (4R,S<sub>S</sub>)-ethyl N-(tert-butylsulfinyl)-4-amino-7-(2-bromophenyl)-2-methyleneheptanoate 1548394-23-5 C20H30BrNO3S
    —— (4R,5S,6S)-3-((3S,5S)-5-(3-(2-carboxyethyl)benzylcarbamoyl)pyrrolidin-3-ylthio)-6-((R)-1-hydroxyethyl)-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 1312953-84-6 C25H31N3O7S
    —— 4-bromoacetylisocoumarin 17545-57-2 C11H7BrO3
    —— [[4-phenyl-1-[[(phenylmethoxy)carbonyl]amino]butyl]hydroxyphosphinyl]acetic acid, methyl ester 85161-66-6 C21H26NO6P
    —— 4-[(S)-1-((S)-1-{(S)-1-[(S)-1-(Carboxymethyl-carbamoyl)-2-(1H-indol-3-yl)-ethylcarbamoyl]-4-guanidino-butylcarbamoyl}-2-phenyl-ethylcarbamoyl)-2-(1H-imidazol-4-yl)-ethylcarbamoyl]-butyric acid tert-butyl ester 64562-08-9 C43H57N11O9
    —— 4'-methanesulfonyl-1'-methyl-1'<i>H</i>-[1,2']biphthalazinyl 54145-22-1 C18H16N4O2S
    —— 4-oxy-pyrazine-2-carboxylic acid (5-nitro-furan-2-ylmethylene)-hydrazide 57905-61-0 C10H7N5O5
    —— 4-Nitro-benzoic acid 1-(3-chloro-phenyl)-ethyl ester 61986-60-5 C15H12ClNO4
    —— 4-methyl-1,2,6-tristibatricyclo{2.2.1.0(2,6)}heptane 81602-63-3 C5H9Sb3
    —— (4-tert-Butyl-cyclohexyloxy)-acetic acid 169566-97-6 C12H22O3
    —— 4-({4-[4-(2-diethylamino-ethyl)-piperazin-1-yl]-phenylamino}-methylene)-4H-isoquinoline-1,3-dione 943517-50-8 C26H33N5O2
    —— 4-amino-3'-trifluoromethyl-biphenyl-3-carbonitrile 1261823-68-0 C14H9F3N2
    —— 4-(4-fluorobenzyl)-2-(4-fluorophenyl)-6-methoxy-1,2,4-triazine-3,5(2H,4H)-dione 1207438-34-3 C17H13F2N3O3
    —— [4-amino-2-(5-difluoromethyl-furan-2-yl)thieno[2,3-d]pyrimidin-6-yl]phenyl-methanol 1221431-09-9 C18H13F2N3O2S
    —— {4-[(1,3-dioxo-2,3-dihydro-1H-isoquinolin-4-ylidenemethyl)-amino]-phenylsulfanyl}-acetic acid 943748-53-6 C18H14N2O4S
    —— 4-(3,4-Methylendioxybenzyl)-3-morpholino-6-phenylpyridazin 51672-08-3 C22H21N3O3
    —— 4'-fluoro-<i>O</i><sup>2'</sup>,<i>O</i><sup>3'</sup>-isopropylidene-[5']uridylic acid bis-(2,2,2-trichloro-ethyl) ester 59463-03-5 C16H18Cl6FN2O9P
    —— 4-(3-amino-6-(3-chloro-4-hydroxy-5-methoxyphenyl)-1,2,4-triazin-5-yl)benzonitrile 1321515-10-9 C17H12ClN5O2
    —— [4-methoxy-5-(thiophen-2-ylmethylidene)pyrrol-2-yl] trifluoromethanesulfonate 1413942-19-4 C11H8F3NO4S2
    —— 4-(furan-2-carbonyl)-3-hydroxy-5-methyl-1-[5-(4-nitro-benzenesulfonyl)-thiazol-2-yl]-1,5-dihydro-pyrrol-2-one 1261070-15-8 C19H13N3O8S2
    —— 4-[5-(1,4-diazatricyclo[4.3.1.1(3,8)]undec-4-yl)pyridin-3-yl]benzonitrile 1258934-01-8 C21H22N4
    —— 4-Methyl-3-heptafluorpropyl-pyridin 20897-62-5 C9H6F7N
    —— 4-<4-(benzyloxy)butyl>-4aα-methyl-3,4,4a,7,8,9aα-hexahydro-9H-benzocycloheptene-2(1H),5(6H)-dione 79391-95-0 C23H32O3
    —— 4-chloro-N-(2-oxocyclobutyl)benzamide 1039204-87-9 C11H10ClNO2
    —— 4-[4-(1-Amino-1-methylethyl)phenyl]-5-chloro-N-[4-(2-(2-ethylimidazol-1-yl)ethyl)phenyl]pyrimidine-2-amine 335592-45-5 C26H29ClN6
    —— (4aS,5R,7aS)-7a-(4-fluoro-[1,1'-biphenyl]-3-yl)-5-methyl-4a,5,7,7a-tetrahydro-4H-furo[3,4-d][1,3]thiazin-2-amine 1384461-54-4 C19H19FN2OS
    —— 4,6-Dimethyl-1,1-dioxo-2-(2-oxo-2-p-tolyl-ethyl)-1,2-dihydro-1λ<sup>6</sup>-isothiazolo[5,4-b]pyridin-3-one 508183-63-9 C17H16N2O4S
    —— 4-(4-amino-naphthalen-1-yloxy)-pyrimidine-2-carboxylic acid methyl ester 476011-64-0 C16H13N3O3
    —— 4-chloro-2-(3-methoxy-propoxy)-benzylamine 1067658-40-5 C11H16ClNO2
    —— 4-Chloro-2-(3-methoxypropylamino)benzonitrile 939817-00-2 C11H13ClN2O
    —— 4-(4-chlorophenyl)-6-ferrocenyl-1-pyridin-2-yl-2-o-tolyl-1,4-dihydropyrimidine 1448535-91-8 C32H26ClFeN3
    —— 4-(2-hydroxyamino-2-oxo-1-phenylethyl)-N-isopropyl-1,4-diazepan-1-carboxamide 1070675-11-4 C17H26N4O3
    —— 4-chloro-6-((2-(2-methyl-4-((3-(pyrimidin-5-ylmethyl)azetidin-1-yl)carbonyl)phenyl)pyrrolidin-1-yl)carbonyl)benzene-1,3-diol 1023885-88-2 C27H27ClN4O4
    —— 4-{8-[(3,4-dimethoxyphenyl)amino]imidazo[1,2-a]pyrazin-6-yl}-N-ethylbenzamide 1181328-62-0 C23H23N5O3
    —— 4'-Methyl-3-isothiozyanatochalkon 26262-55-5 C17H13NOS
    —— {4-[5-(4,6-dihydroxy-5'-isopropyl-2'-methoxybiphenyl-3-yl)-tetrazol-1-yl]piperidin-1-yl}-(4-methoxyphenyl)methanone 1143624-79-6 C30H33N5O5
    —— 4,7-dihydroxy-N,N,N,8-tetramethyl-3,5,9-trioxa-4-phosphapentacosan-1-aminium 4-oxide, hydroxide 97150-27-1 C25H54NO6P
    —— 4-(2,5-dihydroxyphenacyl)-2-(p-tolyl)pyrazolidine-3,5-dione 1003585-28-1 C18H16N2O5
    —— 4-oxo-4-{4H,5H,6H,7H-thieno[3,2-c]pyridin-5-yl}butanoic acid 926252-17-7 C11H13NO3S
    —— 4-Bromo-2,3,3,4,4-pentafluoro-2-(1,1,2,3,3,3-hexafluoro-2-heptafluoropropyloxy-propoxy)-butyryl fluoride 72266-22-9 C10BrF19O3
    —— 4-(4-Chloroanilino)-3-diethylaminomethyl-8-methylquinaldin 72554-28-0 C22H26ClN3
    —— (4S)-4-ethyl-3-[(4-methoxyphenyl)methyl]oxathiazolidine 2,2-dioxide 1173202-60-2 C12H17NO4S
    —— 4-(2-pyridyl)-3-(1-phenylvinyl)-5-(methoxycarbonyl)isoxazoline N-oxide 1246226-33-4 C18H16N2O4
    —— 4-[5,7,7,10,10-Pentamethyl-2-(4-methylpiperazin-1-yl)-8,9-dihydronaphtho[2,3-b][1,5]benzodiazepin-12-yl]benzoic acid 951219-89-9 C34H40N4O2
    —— 4,9-diacetoxy-2-methyl-naphth[2,3-d]oxazole 97498-60-7 C16H13NO5
    —— 4-(4-Methoxy-phenyl)-2-oxo-1,2,5,6,7,8,9,10-octahydro-cycloocta[b]pyridine-3-carbonitrile 77831-44-8 C19H20N2O2
    —— 4-(5-((2R)-2-[1-(3-chlorophenyl)-1H-1,2,3-triazol-4-yl]pyrrolidin-1-yl)-4-methyl-4H-1,2,4-triazol-3-yl)pyridine 1147101-34-5 C19H18ClN9
    —— 4-methyl-2-[4'-trifluoromethyl-5-(5-trifluoromethylpiperidin-2-yl)biphenyl-3-yl]pentanoic acid 1145682-39-8 C25H27F6NO2