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    中文名称 英文名称 CAS号 化学式 结构式图片
    —— 4-methoxy=5,7-nonadienal ethylene acetal 177362-03-7 C12H20O3
    4-methoxy=5,7-nonadienal ethylene acetal
    —— 4,10-dinitro-6,12-dihydro-5,11-methanodibenzo[b,f][1,5]diazocine-2,8-diamine 1447734-29-3 C15H14N6O4
    4,10-dinitro-6,12-dihydro-5,11-methanodibenzo[b,f][1,5]diazocine-2,8-diamine
    —— 4,6-dimethyl-3,4-dihydro-2-quinolone 181121-99-3 C11H13NO
    4,6-dimethyl-3,4-dihydro-2-quinolone
    —— 4-(3-Ethyl-thiophen-2-yl)-2H-phthalazin-1-one 1027528-48-8 C14H12N2OS
    4-(3-Ethyl-thiophen-2-yl)-2H-phthalazin-1-one
    —— 4,4-diphenyl-2-cyclopentenyl azide 138951-98-1 C17H15N3
    4,4-diphenyl-2-cyclopentenyl azide
    —— 4-acetoxy-4-methyl-1<i>t</i>-phenyl-pent-1-en-3-one 106379-21-9 C14H16O3
    4-acetoxy-4-methyl-1<i>t</i>-phenyl-pent-1-en-3-one
    —— 4-Amino-4-deoxyisofolsaeure 53661-94-2 C19H20N8O5
    4-Amino-4-deoxyisofolsaeure
    —— (4-methanesulfonyl-3-methoxy-2-methyl-phenyl)-(3-hydroxy-2,5-dimethyl-3H-imidazol-4-yl)-methanone 1175012-21-1 C15H18N2O5S
    (4-methanesulfonyl-3-methoxy-2-methyl-phenyl)-(3-hydroxy-2,5-dimethyl-3H-imidazol-4-yl)-methanone
    —— 4,4,5,5,6,6-Hexafluoro-3,7-dioxo-2,8-bis-(triphenyl-λ<sup>5</sup>-phosphanylidene)-nonanedioic acid diethyl ester 60521-76-8 C49H40F6O6P2
    4,4,5,5,6,6-Hexafluoro-3,7-dioxo-2,8-bis-(triphenyl-λ<sup>5</sup>-phosphanylidene)-nonanedioic acid diethyl ester
    —— 4-isopropyl-2-mercaptopyrimidine 1345459-71-3 C7H10N2S
    4-isopropyl-2-mercaptopyrimidine
    —— 4-isopropyl-<i>m</i>-phenylene diisocyanate 17022-08-1 C11H10N2O2
    4-isopropyl-<i>m</i>-phenylene diisocyanate
    —— 4-(4-acetylphenyl)-3-(2-methoxyphenyl)-5-phenylfuran-2(5H)-one 1198576-54-3 C25H20O4
    4-(4-acetylphenyl)-3-(2-methoxyphenyl)-5-phenylfuran-2(5H)-one
    —— 4-ethyl-2,4,5,5-tetramethyl-hex-1-ene 107150-09-4 C12H24
    4-ethyl-2,4,5,5-tetramethyl-hex-1-ene
    —— 4-Butoxy-2-tert-butyl-3-(3,3-dimethyl-but-1-ynyl)-4-naphthalen-1-yl-cyclobut-2-enone 175163-34-5 C28H34O2
    4-Butoxy-2-tert-butyl-3-(3,3-dimethyl-but-1-ynyl)-4-naphthalen-1-yl-cyclobut-2-enone
    —— 4,4'-Difluoro-biphenyl-3,3'-dicarboxylic acid bis-[(2-hydroxy-ethyl)-amide] 164164-36-7 C18H18F2N2O4
    4,4'-Difluoro-biphenyl-3,3'-dicarboxylic acid bis-[(2-hydroxy-ethyl)-amide]
    —— 4-Methylene-hex-5-yn-2-one 110317-04-9 C7H8O
    4-Methylene-hex-5-yn-2-one
    —— (4R)-[diisopropyl-(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)silanyloxypropyl]-2-methoxyl-3-methyl-6-trimethylsilanylpyridine 340128-73-6 C27H40F13NO2Si2
    (4R)-[diisopropyl-(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)silanyloxypropyl]-2-methoxyl-3-methyl-6-trimethylsilanylpyridine
    —— 4-Methylene-2-phenyl-hex-5-yn-1-ol 110330-25-1 C13H14O
    4-Methylene-2-phenyl-hex-5-yn-1-ol
    —— 4-(1H,1H,2H,2H-Perfluorooctylsulfonyl)nitrobenzene 171561-97-0 C14H8F13NO4S
    4-(1H,1H,2H,2H-Perfluorooctylsulfonyl)nitrobenzene
    —— 4,4'-Difluoro-biphenyl-3,3'-dicarboxylic acid 27830-00-8 C14H8F2O4
    4,4'-Difluoro-biphenyl-3,3'-dicarboxylic acid
    —— 4-[2-(7-Amino-2-furan-2-yl-oxazolo[5,4-d]pyrimidin-5-ylamino)-ethyl]-phenol 884861-26-1 C17H15N5O3
    4-[2-(7-Amino-2-furan-2-yl-oxazolo[5,4-d]pyrimidin-5-ylamino)-ethyl]-phenol
    —— 4-ethyl-4,5,5-trimethyl-hex-1-ene 103982-59-8 C11H22
    4-ethyl-4,5,5-trimethyl-hex-1-ene
    —— 4-[[3-Chloro-4-[[2,6-diamino-5-(3,4-dichlorophenyl)pyrimidin-4-yl]methoxy]phenyl]carbamoyl]benzenesulfonyl fluoride;sulfuric acid 20096-82-6 C24H19Cl3FN5O8S2
    4-[[3-Chloro-4-[[2,6-diamino-5-(3,4-dichlorophenyl)pyrimidin-4-yl]methoxy]phenyl]carbamoyl]benzenesulfonyl fluoride;sulfuric acid
    —— 4,4'-Difluoro-biphenyl-3,3'-dicarboxylic acid dimethyl ester 27830-01-9 C16H12F2O4
    4,4'-Difluoro-biphenyl-3,3'-dicarboxylic acid dimethyl ester
    —— 4-[[4-[[2,6-Diamino-5-(3,4-dichlorophenyl)pyrimidin-4-yl]methoxy]phenyl]carbamoylamino]-2-methylbenzenesulfonyl fluoride 22074-74-4 C25H21Cl2FN6O4S
    4-[[4-[[2,6-Diamino-5-(3,4-dichlorophenyl)pyrimidin-4-yl]methoxy]phenyl]carbamoylamino]-2-methylbenzenesulfonyl fluoride
    —— 4,4'-Oxybis(1-hydroxy-1-(1-ethylpropyl)-3-phenylurea) 226385-79-1 C24H34N4O5
    4,4'-Oxybis(1-hydroxy-1-(1-ethylpropyl)-3-phenylurea)
    —— 4-methoxy-2-(trifluoromethoxy)benzenesulfonyl chloride 905077-05-6 C8H6ClF3O4S
    4-methoxy-2-(trifluoromethoxy)benzenesulfonyl chloride
    —— (4'-phenyl-1'H-pyrazol-3'-yl)-(4-phenyl-1H-pyrrol-3-yl)methanone 833458-19-8 C20H15N3O
    (4'-phenyl-1'H-pyrazol-3'-yl)-(4-phenyl-1H-pyrrol-3-yl)methanone
    —— 4H-cyclopenta<def>phenanthren-2-amine 69706-40-7 C15H11N
    4H-cyclopenta<def>phenanthren-2-amine
    —— 4-chloro-6-(3-chlorophenylamino)nicotinonitrile 1337906-08-7 C12H7Cl2N3
    4-chloro-6-(3-chlorophenylamino)nicotinonitrile
    —— 4-Hexyl-1-methyleneoctahydro-4lambda(5)-pyrrolizine 62934-53-6 C14H26N+
    4-Hexyl-1-methyleneoctahydro-4lambda(5)-pyrrolizine
    —— 4,4'-(bis-1,2,4-triazolidine-3,5-dione-4-yl)-diphenyl ether 81779-02-4 C16H12N6O5
    4,4'-(bis-1,2,4-triazolidine-3,5-dione-4-yl)-diphenyl ether
    —— 4-Chlor-1,3-bis-isothiocyanato-benzol 75852-90-3 C8H3ClN2S2
    4-Chlor-1,3-bis-isothiocyanato-benzol
    —— [4,5-dibromo-1-[4,5-dibromo-2-(2-hydroxybenzoyl)-1H-pyrrol-3-yl]pyrrol-2-yl]-(2-hydroxyphenyl)methanone 1305334-96-6 C22H12Br4N2O4
    [4,5-dibromo-1-[4,5-dibromo-2-(2-hydroxybenzoyl)-1H-pyrrol-3-yl]pyrrol-2-yl]-(2-hydroxyphenyl)methanone
    —— (4,4′,5,5′-tetrachloro-1′H-[1,3′-bipyrrole]-2,2′-diyl)bis((2-methoxyphenyl)methanone) 1306747-25-0 C24H16Cl4N2O4
    (4,4′,5,5′-tetrachloro-1′H-[1,3′-bipyrrole]-2,2′-diyl)bis((2-methoxyphenyl)methanone)
    —— (4-Chloro-phenyl)-(3-chloro-phenyl)-diazene 104001-08-3 C12H8Cl2N2
    (4-Chloro-phenyl)-(3-chloro-phenyl)-diazene
    —— 4-Isobutyl-1-methyleneoctahydro-4lambda(5)-pyrrolizine 62934-56-9 C12H22N+
    4-Isobutyl-1-methyleneoctahydro-4lambda(5)-pyrrolizine
    —— 4-(4-methoxyphenyl)-3-[[4-(4-methoxyphenyl)-1H-pyrrol-3-yl]sulfonyl]-4,5-dihydro-1H-pyrazole 1246658-44-5 C21H21N3O4S
    4-(4-methoxyphenyl)-3-[[4-(4-methoxyphenyl)-1H-pyrrol-3-yl]sulfonyl]-4,5-dihydro-1H-pyrazole
    —— 4-[({[(Z)-(1-methyl-1H-tetrazol-5-yl)(phenyl)methylene]amino}oxy)methyl]-1,3-thiazol-2-amine 1313821-42-9 C13H13N7OS
    4-[({[(Z)-(1-methyl-1H-tetrazol-5-yl)(phenyl)methylene]amino}oxy)methyl]-1,3-thiazol-2-amine
    —— 4-[[4-(Ethylamino)-3-methylphenyl]-(4-ethylimino-3-methylcyclohexa-2,5-dien-1-ylidene)methyl]-6-hydroxybenzene-1,3-disulfonic acid 4463-44-9 C25H28N2O7S2
    4-[[4-(Ethylamino)-3-methylphenyl]-(4-ethylimino-3-methylcyclohexa-2,5-dien-1-ylidene)methyl]-6-hydroxybenzene-1,3-disulfonic acid
    —— 4-Phthalimidobutyl-O-ethyl-dithiocarbonat 92647-21-7 C15H17NO3S2
    4-Phthalimidobutyl-O-ethyl-dithiocarbonat
    —— [4-(4-Chloro-phenyl)-6-methyl-1H-pyrazolo[3,4-b]pyridin-3-yl]-[1-phenyl-meth-(E)-ylidene]-amine 350241-98-4 C20H15ClN4
    [4-(4-Chloro-phenyl)-6-methyl-1H-pyrazolo[3,4-b]pyridin-3-yl]-[1-phenyl-meth-(E)-ylidene]-amine
    —— 4-phenyl-3-[(4-phenyl-1H-pyrrol-3-yl)sulfonyl]-4,5-dihydro-1H-pyrazole 1246658-43-4 C19H17N3O2S
    4-phenyl-3-[(4-phenyl-1H-pyrrol-3-yl)sulfonyl]-4,5-dihydro-1H-pyrazole
    —— (4-Furan-2-yl-6-methyl-1H-pyrazolo[3,4-b]pyridin-3-yl)-[1-phenyl-meth-(E)-ylidene]-amine 350242-00-1 C18H14N4O
    (4-Furan-2-yl-6-methyl-1H-pyrazolo[3,4-b]pyridin-3-yl)-[1-phenyl-meth-(E)-ylidene]-amine
    —— 4-oxo-2-phenyl-4H-3,1-benzoxazine-6-carbonyl chloride 944445-57-2 C15H8ClNO3
    4-oxo-2-phenyl-4H-3,1-benzoxazine-6-carbonyl chloride
    —— 4-Imidazo[1,5-a]pyridin-3-ylbenzonitrile 1206966-57-5 C14H9N3
    4-Imidazo[1,5-a]pyridin-3-ylbenzonitrile
    —— 4-Methyl-4-propargyl-cyclohexa-2.5-dien-1-on 37982-83-5 C10H10O
    4-Methyl-4-propargyl-cyclohexa-2.5-dien-1-on
    —— 4-acetamino-2-methyl-phenylsulfonicacid 88963-65-9 C9H11NO4S
    4-acetamino-2-methyl-phenylsulfonicacid
    —— 4-(3-methyl-crotonoyloxy)-quinolin-2-ol 91794-19-3 C14H13NO3
    4-(3-methyl-crotonoyloxy)-quinolin-2-ol
    —— 4-hydroxy-1-phenylnonan-3-one 1146542-37-1 C15H22O2
    4-hydroxy-1-phenylnonan-3-one