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    中文名称 英文名称 CAS号 化学式 结构式图片
    —— 4-ethyl-α-methoxy-N-(2-methoxy-1-methylethyl)-2,6-dinitro-m-toluidine 64122-71-0 C14H21N3O6
    4-ethyl-α-methoxy-N-(2-methoxy-1-methylethyl)-2,6-dinitro-m-toluidine
    —— 4-Methyl-1,3-dioxene-(4) 15973-03-2 C5H8O2
    4-Methyl-1,3-dioxene-(4)
    —— 4-Hydroxypent-3-en-2-one;vanadium —— C15H24O6V
    4-Hydroxypent-3-en-2-one;vanadium
    —— 4-ethoxyethynyl-N-methylsulfonyl-N-(methoxymethyl)aniline 143278-14-2 C13H17NO4S
    4-ethoxyethynyl-N-methylsulfonyl-N-(methoxymethyl)aniline
    —— 4,6-diacetyl-3-phenyl-3,4-dihydrothieno[2,3-b]pyrazin-2(1H)-one 556825-71-9 C16H14N2O3S
    4,6-diacetyl-3-phenyl-3,4-dihydrothieno[2,3-b]pyrazin-2(1H)-one
    —— 4-(2-chloro-4-pyridinyl)-N-(2-methoxy-1-methylethyl)-2-pyrimidinamine 1150111-30-0 C13H15ClN4O
    4-(2-chloro-4-pyridinyl)-N-(2-methoxy-1-methylethyl)-2-pyrimidinamine
    —— 4-[1-(4-bromo-phenyl)-2-nitro-ethyl]-piperidine-1,4-dicarboxylic acid-1-tert-butyl ester 4-methyl ester 897670-77-8 C20H27BrN2O6
    4-[1-(4-bromo-phenyl)-2-nitro-ethyl]-piperidine-1,4-dicarboxylic acid-1-tert-butyl ester 4-methyl ester
    —— 4-chloro-N-(2-chloro-3-pyridyl)-2-nitrobenzenesulfonamide 871714-01-1 C11H7Cl2N3O4S
    4-chloro-N-(2-chloro-3-pyridyl)-2-nitrobenzenesulfonamide
    —— 4,4'-oxy-bis-benzenesulfonic acid bis-methylamide 1096-17-9 C14H16N2O5S2
    4,4'-oxy-bis-benzenesulfonic acid bis-methylamide
    —— 4-Tert-butyl-2-[3-[3-[5-tert-butyl-3-(5-tert-butyl-2-hydroxyphenyl)-2-hydroxyphenyl]phenyl]phenyl]-6-(5-tert-butyl-2-hydroxyphenyl)phenol 1251531-17-5 C52H58O4
    4-Tert-butyl-2-[3-[3-[5-tert-butyl-3-(5-tert-butyl-2-hydroxyphenyl)-2-hydroxyphenyl]phenyl]phenyl]-6-(5-tert-butyl-2-hydroxyphenyl)phenol
    —— 4-phenylamino-5a,6,11,11a-tetrahydroquinazolino[3,2-e]purine 1261602-22-5 C18H14N6
    4-phenylamino-5a,6,11,11a-tetrahydroquinazolino[3,2-e]purine
    —— (4E)-2-azido-2,4,5-trideoxy-3-O-methoxymethyl-1-O-[(trifluoromethyl)sulfonyl]-6-O-undecyl-D-erythro-hex-4-enitol 1172607-60-1 C20H36F3N3O6S
    (4E)-2-azido-2,4,5-trideoxy-3-O-methoxymethyl-1-O-[(trifluoromethyl)sulfonyl]-6-O-undecyl-D-erythro-hex-4-enitol
    —— 4-chloro-N-[2-methyl-4-oxo-6-[[(2-pyrazin-2-yloxyacetyl)amino]sulfamoyl]-1,2-dihydropyrido[3,2-d]pyrimidin-3-yl]-2-nitrobenzenesulfonamide 1228352-69-9 C20H18ClN9O9S2
    4-chloro-N-[2-methyl-4-oxo-6-[[(2-pyrazin-2-yloxyacetyl)amino]sulfamoyl]-1,2-dihydropyrido[3,2-d]pyrimidin-3-yl]-2-nitrobenzenesulfonamide
    —— 4-benzyloxycarbonylaminopyrazolidin-3-one 113703-08-5 C11H13N3O3
    4-benzyloxycarbonylaminopyrazolidin-3-one
    —— 4-ethyl-<i>o</i>-phenylenediamine; dihydrochloride 116599-06-5 C8H12N2*2ClH
    4-ethyl-<i>o</i>-phenylenediamine; dihydrochloride
    —— 4-chloro-N-(2-chloro-3-pyridyl)-N-methyl-2-nitrobenzenesulfonamide 871714-10-2 C12H9Cl2N3O4S
    4-chloro-N-(2-chloro-3-pyridyl)-N-methyl-2-nitrobenzenesulfonamide
    —— 4-hydroxy-5-methyl-3-(2-nitrobenzyl)oxazolidine-2-one 907994-39-2 C11H12N2O5
    4-hydroxy-5-methyl-3-(2-nitrobenzyl)oxazolidine-2-one
    —— 4-(3-cyclopropylmethyl-6,6-dimethyl-4-oxo-4,5,6,7-tetrahydroindazol-1-yl)-2,5-difluorobenzonitrile 1073973-25-7 C20H19F2N3O
    4-(3-cyclopropylmethyl-6,6-dimethyl-4-oxo-4,5,6,7-tetrahydroindazol-1-yl)-2,5-difluorobenzonitrile
    —— 4,4'-Oxybis[N-(4-nitrophenyl)benzene-1-sulfonamide] 90286-96-7 C24H18N4O9S2
    4,4'-Oxybis[N-(4-nitrophenyl)benzene-1-sulfonamide]
    —— 4-methyl-N-(1-(3-nitrophenyl)-3-oxo-3-phenylpropyl)benzenesulfonamide 1198790-80-5 C22H20N2O5S
    4-methyl-N-(1-(3-nitrophenyl)-3-oxo-3-phenylpropyl)benzenesulfonamide
    —— 4,5-dihexylbenzo[1,2-b:4,3-b']dithiophene-2-methanol 960074-43-5 C23H32OS2
    4,5-dihexylbenzo[1,2-b:4,3-b']dithiophene-2-methanol
    —— 4,4'-oxydibenzenesulfonyl fluoride 133657-86-0 C12H8F2O5S2
    4,4'-oxydibenzenesulfonyl fluoride
    —— (4-methoxy-[1]naphthylmethylene)-methyl-amine 107622-85-5 C13H13NO
    (4-methoxy-[1]naphthylmethylene)-methyl-amine
    —— 4-Methyl-N-[(naphthalen-1-yl)methylidene]benzene-1-sulfinamide 188926-95-6 C18H15NOS
    4-Methyl-N-[(naphthalen-1-yl)methylidene]benzene-1-sulfinamide
    —— 4-[4-Amino-5-(4-cyanoanilino)-2-(methoxymethyl)phenoxy]-3,5-dimethylbenzonitrile 1538625-14-7 C24H22N4O2
    4-[4-Amino-5-(4-cyanoanilino)-2-(methoxymethyl)phenoxy]-3,5-dimethylbenzonitrile
    —— (4E)-1S-(2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-α-D-galactopyranosyl)-2-azido-2,4,5-trideoxy-3-O-methoxymethyl-1-thio-6-O-undecyl-D-erythro-hex-4-enitol 1172607-64-5 C33H56N4O11S
    (4E)-1S-(2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-α-D-galactopyranosyl)-2-azido-2,4,5-trideoxy-3-O-methoxymethyl-1-thio-6-O-undecyl-D-erythro-hex-4-enitol
    —— (4R)-3-((3S,4R,5R)-5,9-Bis{[tert-butyl(dimethyl)silyl]oxy}-3-hydroxy-4-methylnonanoyl)-4-isopropyl-1,3-thiazolidine-2-thione 1217479-40-7 C28H57NO4S2Si2
    (4R)-3-((3S,4R,5R)-5,9-Bis{[tert-butyl(dimethyl)silyl]oxy}-3-hydroxy-4-methylnonanoyl)-4-isopropyl-1,3-thiazolidine-2-thione
    —— 4-t-butyldiphenylsilyloxy-2-methylhexa-2,5-diene 687638-54-6 C23H30OSi
    4-t-butyldiphenylsilyloxy-2-methylhexa-2,5-diene
    —— 4α-methyl-5-[3hydroxypropyl]-4,4α,5,6,7,8-hexahydro-3H-naphthalen-2-one 927824-13-3 C14H22O2
    4α-methyl-5-[3hydroxypropyl]-4,4α,5,6,7,8-hexahydro-3H-naphthalen-2-one
    —— 4-methyl-2,5-dioxo-7,8,9,10-tetrahydro-2<i>H</i>,5<i>H</i>-pyrano[2,3-<i>b</i>]quinolizine-11-carboxylic acid 39973-82-5 C14H13NO5
    4-methyl-2,5-dioxo-7,8,9,10-tetrahydro-2<i>H</i>,5<i>H</i>-pyrano[2,3-<i>b</i>]quinolizine-11-carboxylic acid
    —— 4-t-butyldimethylsilyloxy-2-methylhexa-2,5-diene 687638-53-5 C13H26OSi
    4-t-butyldimethylsilyloxy-2-methylhexa-2,5-diene
    —— 4-bromo-5-(1-methylpyrazol-4-yl)-1H-pyrrolo[2,3-b]pyridine 1313021-73-6 C11H9BrN4
    4-bromo-5-(1-methylpyrazol-4-yl)-1H-pyrrolo[2,3-b]pyridine
    —— 4H-Oxocin-5,6-dicarboxylic acid, dimethyl ester 61265-32-5 C11H12O5
    4H-Oxocin-5,6-dicarboxylic acid, dimethyl ester
    —— 4-methyl-7,8,9,10-tetrahydro-pyrano[2,3-<i>b</i>]quinolizine-2,5-dione 39973-83-6 C13H13NO3
    4-methyl-7,8,9,10-tetrahydro-pyrano[2,3-<i>b</i>]quinolizine-2,5-dione
    —— 4,4,7,7-Tetramethyl-cyclodecyn 2198-29-0 C14H24
    4,4,7,7-Tetramethyl-cyclodecyn
    —— 4-Benzyloxy-3-cyanobenzotrifluorid 53985-52-7 C15H10F3NO
    4-Benzyloxy-3-cyanobenzotrifluorid
    —— 4-(benzyloxy)-3-[(1R)-3-(diisopropylamino)-1-phenylpropyl]phenol 950678-87-2 C28H35NO2
    4-(benzyloxy)-3-[(1R)-3-(diisopropylamino)-1-phenylpropyl]phenol
    —— 4-[2-(tert-butyl-diphenyl-silanyloxy)-ethylidene]-2-triisopropylsilanyloxymethyl-6-trityloxymethyl-tetrahydropyran 184174-44-5 C53H68O4Si2
    4-[2-(tert-butyl-diphenyl-silanyloxy)-ethylidene]-2-triisopropylsilanyloxymethyl-6-trityloxymethyl-tetrahydropyran
    —— 4,4-dimethyl-6-bromo-hept-6-en-1-al 627545-68-0 C9H15BrO
    4,4-dimethyl-6-bromo-hept-6-en-1-al
    —— (4S,6S)-6,10-dimethylundec-9-en-2-yn-4-ol 1173997-21-1 C13H22O
    (4S,6S)-6,10-dimethylundec-9-en-2-yn-4-ol
    —— 4,4,4-trifluoro-2,2-dimethylbutyl methanesulfonate 1008754-90-2 C7H13F3O3S
    4,4,4-trifluoro-2,2-dimethylbutyl methanesulfonate
    —— 4-Phenyl-but-1-en-3-yn-1-one 138541-71-6 C10H6O
    4-Phenyl-but-1-en-3-yn-1-one
    —— {4-[3-(4-fluorophenyl)-1-methoxymethyl-1H-pyrrolo[3,2-b]pyridin-2-yl]pyrimidin-2-yl}-(2-methoxy-1-methylethyl)amine 1075195-90-2 C23H24FN5O2
    {4-[3-(4-fluorophenyl)-1-methoxymethyl-1H-pyrrolo[3,2-b]pyridin-2-yl]pyrimidin-2-yl}-(2-methoxy-1-methylethyl)amine
    —— 4-N-benzoyl-2'-O-<1-(2-fluorophenyl)-4-methoxypiperidin-4-yl>-5'-O-(9-phenylxanthen-9-yl)cytidine 3'-<(2-cyanoethyl)-N,N-diisopropylphosphoroamidite> 147490-79-7 C56H60FN6O9P
    4-N-benzoyl-2'-O-<1-(2-fluorophenyl)-4-methoxypiperidin-4-yl>-5'-O-(9-phenylxanthen-9-yl)cytidine 3'-<(2-cyanoethyl)-N,N-diisopropylphosphoroamidite>
    —— 4-methyl-2,5-dioxo-2<i>H</i>,5<i>H</i>-pyrano[2,3-<i>b</i>]quinolizine 11-carboxylic acid methyl ester 39973-80-3 C15H11NO5
    4-methyl-2,5-dioxo-2<i>H</i>,5<i>H</i>-pyrano[2,3-<i>b</i>]quinolizine 11-carboxylic acid methyl ester
    —— 4-methyl-1-nitro-imidazolidin-2-one 412275-04-8 C4H7N3O3
    4-methyl-1-nitro-imidazolidin-2-one
    —— 4'-methoxymethyloxy-2-(4-Triisopropylsilyloxy-phenyl)acetophenone 412051-40-2 C25H36O4Si
    4'-methoxymethyloxy-2-(4-Triisopropylsilyloxy-phenyl)acetophenone
    —— 4-bromo-2-(2-methoxy-1-methyl-ethylamino)benzonitrile 1008716-50-4 C11H13BrN2O
    4-bromo-2-(2-methoxy-1-methyl-ethylamino)benzonitrile
    —— 4-N-benzoyl-2'-O-<1-(2-fluorophenyl)-4-methoxypiperidin-4-yl>-5'-O-(9-phenylxanthen-9-yl)cytidine 147490-75-3 C47H43FN4O8
    4-N-benzoyl-2'-O-<1-(2-fluorophenyl)-4-methoxypiperidin-4-yl>-5'-O-(9-phenylxanthen-9-yl)cytidine
    —— 4-triisopropylsilyloxy-2-(3-hydroxyphenyl)-acetophenone 474527-30-5 C23H32O3Si
    4-triisopropylsilyloxy-2-(3-hydroxyphenyl)-acetophenone