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    中文名称 英文名称 CAS号 化学式 结构式图片
    —— 4-ethoxy-5,6-dihydro-4H-cyclopenta[b]thiophene 1414363-37-3 C9H12OS
    4-ethoxy-5,6-dihydro-4H-cyclopenta[b]thiophene
    —— 4-Bromo-2-(3-trifluoromethylphenyl)-1-(2-trimethylsilyl-ethoxymethyl)imidazole 302839-24-3 C16H20BrF3N2OSi
    4-Bromo-2-(3-trifluoromethylphenyl)-1-(2-trimethylsilyl-ethoxymethyl)imidazole
    —— 4-Benzyl-2-hydroxy-6-oxo-cyclohex-1-enecarboxylic acid (2,4-dichloro-phenyl)-amide 40397-84-0 C20H17Cl2NO3
    4-Benzyl-2-hydroxy-6-oxo-cyclohex-1-enecarboxylic acid (2,4-dichloro-phenyl)-amide
    —— 4-(4-bromo-phenyl)-2-(8-hydroxy-quinolin-5-ylazo)-3-methyl-thiazolium; iodide 21818-11-1 C19H14BrN4OS*I
    4-(4-bromo-phenyl)-2-(8-hydroxy-quinolin-5-ylazo)-3-methyl-thiazolium; iodide
    —— (4-{(S)-2-Amino-2-[(S)-1-((S)-1-dibutylcarbamoyl-ethylcarbamoyl)-2-methyl-propylcarbamoyl]-ethyl}-2-oxo-2H-pyridin-1-ylmethyl)-phosphonic acid 218444-74-7 C25H44N5O7P
    (4-{(S)-2-Amino-2-[(S)-1-((S)-1-dibutylcarbamoyl-ethylcarbamoyl)-2-methyl-propylcarbamoyl]-ethyl}-2-oxo-2H-pyridin-1-ylmethyl)-phosphonic acid
    —— (4S,2Z)-4-[(tert-Butoxycarbonyl)amino]-6-methylhept-2-en-1-ol 247200-42-6 C13H25NO3
    (4S,2Z)-4-[(tert-Butoxycarbonyl)amino]-6-methylhept-2-en-1-ol
    —— 4-[2-Ethyl-5-(4-methylquinolin-2-yl)oxyphenyl]-5-hydroxy-2,2,6,6-tetramethylpyran-3-one 1235558-29-8 C27H29NO4
    4-[2-Ethyl-5-(4-methylquinolin-2-yl)oxyphenyl]-5-hydroxy-2,2,6,6-tetramethylpyran-3-one
    —— 4-(N-(5-cyclopropyl-3-(methylcarbamoyl)-2-p-tolylfuro[2,3-b]pyridin-6-yl)methylsulfonamido)butanoic acid 1345180-98-4 C24H27N3O6S
    4-(N-(5-cyclopropyl-3-(methylcarbamoyl)-2-p-tolylfuro[2,3-b]pyridin-6-yl)methylsulfonamido)butanoic acid
    —— [4-[5-[2-(6-Aminopyridin-3-yl)ethynyl]-6-methylpyrimidin-4-yl]piperazin-1-yl]-cyclobutylmethanone 1321872-47-2 C21H24N6O
    [4-[5-[2-(6-Aminopyridin-3-yl)ethynyl]-6-methylpyrimidin-4-yl]piperazin-1-yl]-cyclobutylmethanone
    —— 4-[5-(1,3-Benzothiazol-2-yloxy)-2-ethylphenyl]-5-hydroxy-2,2,6,6-tetramethylpyran-3-one 1235556-80-5 C24H25NO4S
    4-[5-(1,3-Benzothiazol-2-yloxy)-2-ethylphenyl]-5-hydroxy-2,2,6,6-tetramethylpyran-3-one
    —— 4,7-bis(2-hydroxy-2-methylpropyl)-1-thia-4,7-diazacyclononane 210816-87-8 C14H30N2O2S
    4,7-bis(2-hydroxy-2-methylpropyl)-1-thia-4,7-diazacyclononane
    —— 4-diethylaminophenylmercury chloride 20883-30-1 C10H14ClHgN
    4-diethylaminophenylmercury chloride
    —— 4-((hydroxyimino)methyl)benzaldehyde 604799-91-9 C8H7NO2
    4-((hydroxyimino)methyl)benzaldehyde
    —— 4-((2R,3R)-3-Hydroxy-2-trityloxymethyl-pent-4-enyl)-benzoic acid ethyl ester 329796-57-8 C34H34O4
    4-((2R,3R)-3-Hydroxy-2-trityloxymethyl-pent-4-enyl)-benzoic acid ethyl ester
    —— (4R,5S,6S)-6-((R)-1-Hydroxy-ethyl)-4-methyl-3-[(3S,5S)-5-(2-methyl-isoxazolidin-5-yl)-1-(4-nitro-benzyloxycarbonyl)-pyrrolidin-3-ylsulfanyl]-7-oxo-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid 4-nitro-benzyl ester 262297-38-1 C33H37N5O11S
    (4R,5S,6S)-6-((R)-1-Hydroxy-ethyl)-4-methyl-3-[(3S,5S)-5-(2-methyl-isoxazolidin-5-yl)-1-(4-nitro-benzyloxycarbonyl)-pyrrolidin-3-ylsulfanyl]-7-oxo-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid 4-nitro-benzyl ester
    —— (4aR,10bR)-5,5-dimethyl-1,2,3,4a,5,10b-hexahydro-[1]benzopyrano[3,4-b][1,4]oxazine-9-carbonitrile 205312-13-6 C14H16N2O2
    (4aR,10bR)-5,5-dimethyl-1,2,3,4a,5,10b-hexahydro-[1]benzopyrano[3,4-b][1,4]oxazine-9-carbonitrile
    —— 4-((3-((3,4-difluoro-2-((2-fluoro-4-iodophenyl)amino)benzamido)oxy)propyl)amino)-4-oxobutanoic acid 1596369-07-1 C20H19F3IN3O5
    4-((3-((3,4-difluoro-2-((2-fluoro-4-iodophenyl)amino)benzamido)oxy)propyl)amino)-4-oxobutanoic acid
    —— 4-aza-3-ethyl-3-propionyloxy-1(3H)-isobenzofuranone 115147-80-3 C12H13NO4
    4-aza-3-ethyl-3-propionyloxy-1(3H)-isobenzofuranone
    —— 4-(2,3-Epoxy-3-phenyl-propionyl)-tropolon-3'-p-tolylhydrazon 1250-69-7 C23H20N2O3
    4-(2,3-Epoxy-3-phenyl-propionyl)-tropolon-3'-p-tolylhydrazon
    —— <4-Methoxy-phenyl>-<3H-naphth<1.2-d>imidazolyl-(2)>-keton 98638-24-5 C19H14N2O2
    <4-Methoxy-phenyl>-<3H-naphth<1.2-d>imidazolyl-(2)>-keton
    —— 4-Chloro-N<sup>1</sup>-(2,6-dimethyl-pyridin-4-yl)-benzene-1,2-diamine 92026-60-3 C13H14ClN3
    4-Chloro-N<sup>1</sup>-(2,6-dimethyl-pyridin-4-yl)-benzene-1,2-diamine
    —— 4-Methyl-xanthen-carbonsaeure-(9)-<2-methyl-butylester> 112116-23-1 C20H22O3
    4-Methyl-xanthen-carbonsaeure-(9)-<2-methyl-butylester>
    —— 4α-Acetoxy-cholestandion-(3.7) 97157-55-6 C29H46O4
    4α-Acetoxy-cholestandion-(3.7)
    —— 4-Methyl-3-sulfamoyl-benzolsulfonsaeure-<2-phenyl-aethylamid> 109696-08-4 C15H18N2O4S2
    4-Methyl-3-sulfamoyl-benzolsulfonsaeure-<2-phenyl-aethylamid>
    —— 4,6-Dimethyl-2,2-dibutyl-tetrahydropyran 101452-91-9 C15H30O
    4,6-Dimethyl-2,2-dibutyl-tetrahydropyran
    —— (4aS,9bR)-8,9b-Dimethyl-4-[1-piperazin-1-yl-meth-(E)-ylidene]-4a,9b-dihydro-4H-dibenzofuran-3-one 86657-89-8 C19H22N2O2
    (4aS,9bR)-8,9b-Dimethyl-4-[1-piperazin-1-yl-meth-(E)-ylidene]-4a,9b-dihydro-4H-dibenzofuran-3-one
    —— (4-methyl-2-phenyl-4<i>H</i>-benzo[<i>d</i>]imidazo[1,2-<i>a</i>]imidazol-1-yl)-oxo-acetaldehyde 67073-13-6 C18H13N3O2
    (4-methyl-2-phenyl-4<i>H</i>-benzo[<i>d</i>]imidazo[1,2-<i>a</i>]imidazol-1-yl)-oxo-acetaldehyde
    —— 4-Methylamino-α-methyl-3-nitrobenzeneacetonitril 56353-64-1 C10H11N3O2
    4-Methylamino-α-methyl-3-nitrobenzeneacetonitril
    —— 4-ethoxy-6-(1-oxo-1λ<sup>4</sup>-thiomorpholin-4-yl)-2-piperazin-1-yl-pyrimidine-5-carbonitrile 56035-03-1 C15H22N6O2S
    4-ethoxy-6-(1-oxo-1λ<sup>4</sup>-thiomorpholin-4-yl)-2-piperazin-1-yl-pyrimidine-5-carbonitrile
    —— 4-<1-Acetyl-1,4-dihydro-pyridyl-(4)>-4-methyl-2-phenyl-oxazolon-(5) 19642-18-3 C17H16N2O3
    4-<1-Acetyl-1,4-dihydro-pyridyl-(4)>-4-methyl-2-phenyl-oxazolon-(5)
    —— 4-Hydroxy-1-oxo-1,2,4a,5,6,7,8,8a-octahydro-isochinolin-3-carbonsaeureethylester 14181-08-9 C12H17NO4
    4-Hydroxy-1-oxo-1,2,4a,5,6,7,8,8a-octahydro-isochinolin-3-carbonsaeureethylester
    —— 4-Amino-3-ethoxycarbonyl-2-oxo-1-aza-spiro<4.5>dec-3-en 93139-06-1 C12H18N2O3
    4-Amino-3-ethoxycarbonyl-2-oxo-1-aza-spiro<4.5>dec-3-en
    —— 4-Nitro-carbanilsaeure-<2-nitro-butylester> 91332-97-7 C11H13N3O6
    4-Nitro-carbanilsaeure-<2-nitro-butylester>
    —— 4-[[4-oxo-2-sulfanylidene-3-[3-(trifluoromethyl)phenyl]-1,3-thiazolidin-5-ylidene]methyl]benzamide 1073612-86-8 C18H11F3N2O2S2
    4-[[4-oxo-2-sulfanylidene-3-[3-(trifluoromethyl)phenyl]-1,3-thiazolidin-5-ylidene]methyl]benzamide
    —— 4-benzoyl-3-(5-chloro-2-nitro-phenyl)-2-methylene-5-oxo-hexanenitrile 910456-73-4 C20H15ClN2O4
    4-benzoyl-3-(5-chloro-2-nitro-phenyl)-2-methylene-5-oxo-hexanenitrile
    —— 4-Acetyl-5-(trimethylsilyl)-3-phenyl-pyridazin 83182-73-4 C15H18N2OSi
    4-Acetyl-5-(trimethylsilyl)-3-phenyl-pyridazin
    —— 4-{2-[2-(Naphthalene-1-sulfonylamino)-acetylamino]-3-oxo-3-piperidin-1-yl-propyl}-thiobenzimidic acid methyl ester; hydriodide 92740-68-6 C28H32N4O4S2*HI
    4-{2-[2-(Naphthalene-1-sulfonylamino)-acetylamino]-3-oxo-3-piperidin-1-yl-propyl}-thiobenzimidic acid methyl ester; hydriodide
    —— 4-aza-1-(2-chloropyridin-4-yl)-carbonyl-spiro-[indoline-3,4'-piperidine] 857730-13-3 C17H17ClN4O
    4-aza-1-(2-chloropyridin-4-yl)-carbonyl-spiro-[indoline-3,4'-piperidine]
    —— <4-(2-chloroethoxy)phenyl>zinc chloride 129942-64-9 C8H8Cl2OZn
    <4-(2-chloroethoxy)phenyl>zinc chloride
    —— 4,4,9,9-tetraoxo-4λ6,9λ6-dithia-dodecanedinitrile 91006-04-1 C10H16N2O4S2
    4,4,9,9-tetraoxo-4λ6,9λ6-dithia-dodecanedinitrile
    —— (4R)-2,2,6-trimethyl-(3at,8at)-hexahydro-4r,7c-methano-[1,3]dioxolo[4,5-e][1,2]oxazepin-8t-ol 73135-48-5 C10H17NO4
    (4R)-2,2,6-trimethyl-(3at,8at)-hexahydro-4r,7c-methano-[1,3]dioxolo[4,5-e][1,2]oxazepin-8t-ol
    —— [(4-Bromo-phenyl)-(diethoxy-phosphoryl)-methyl]-phosphonic acid diethyl ester 344891-46-9 C15H25BrO6P2
    [(4-Bromo-phenyl)-(diethoxy-phosphoryl)-methyl]-phosphonic acid diethyl ester
    —— 4-[4-(3-chloro-4-methoxybenzylamino)-[1]benzothieno[2,3-d]-pyrimidin-2-yl]benzoic acid, ethanolamine salt 247909-75-7 C2H7NO*C25H18ClN3O3S
    4-[4-(3-chloro-4-methoxybenzylamino)-[1]benzothieno[2,3-d]-pyrimidin-2-yl]benzoic acid, ethanolamine salt
    —— 4-(2-ethoxycarbonylcarbamoyl-2-cyano-vinylamino)-benzoic acid 100708-60-9 C14H13N3O5
    4-(2-ethoxycarbonylcarbamoyl-2-cyano-vinylamino)-benzoic acid
    —— 4-(bis-4-[5-(2,2-dicyanovinyl)thiophene-2-yl]phenylamino)benzoic acid 1042718-56-8 C35H19N5O2S2
    4-(bis-4-[5-(2,2-dicyanovinyl)thiophene-2-yl]phenylamino)benzoic acid
    —— 4-methyl-1-(3-thienyl)pentylideneamino-oxyacetic acid 78072-56-7 C12H17NO3S
    4-methyl-1-(3-thienyl)pentylideneamino-oxyacetic acid
    —— 4-Hydroxy-1,5-dimethyl-bicyclo<2.2.2>octan-2-on 7697-20-3 C10H16O2
    4-Hydroxy-1,5-dimethyl-bicyclo<2.2.2>octan-2-on
    —— 4,4-dimethyl-2-(2-methylsulfanylmethyl-phenyl)-4,5-dihydro-oxazole 56446-28-7 C13H17NOS
    4,4-dimethyl-2-(2-methylsulfanylmethyl-phenyl)-4,5-dihydro-oxazole
    —— 4-((2-(2-((4-Ethylphenyl)amino)-2-oxoacetyl)hydrazono)methyl)phenyl furan-2-carboxylate 765311-58-8 C22H19N3O5
    4-((2-(2-((4-Ethylphenyl)amino)-2-oxoacetyl)hydrazono)methyl)phenyl furan-2-carboxylate
    —— 4-Brom-5-sulfamoyl-N-benzyl-anthranilsaeure 2114-72-9 C14H13BrN2O4S
    4-Brom-5-sulfamoyl-N-benzyl-anthranilsaeure