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    中文名称 英文名称 CAS号 化学式 结构式图片
    —— 4-hydrazono-5-oxo-4,5-dihydro-isoxazole-3-carboxylic acid ethyl ester 70432-30-3 C6H7N3O4
    4-hydrazono-5-oxo-4,5-dihydro-isoxazole-3-carboxylic acid ethyl ester
    —— 4,4-Di-tert.butyl-4H-1,2-oxazol (3) 53762-81-5 C10H19NO
    4,4-Di-tert.butyl-4H-1,2-oxazol (3)
    —— 4-[8-(3,4-dichloro-5-cyclopropylbenzyl)-2-oxo-1-oxa-3,8-diazaspiro[4.5]dec-3-yl]benzoic acid trifluoroacetate 1360918-04-2 C2HF3O2*C24H24Cl2N2O4
    4-[8-(3,4-dichloro-5-cyclopropylbenzyl)-2-oxo-1-oxa-3,8-diazaspiro[4.5]dec-3-yl]benzoic acid trifluoroacetate
    —— 4-[2-(2-Chlorophenyl)-4,5-dimethylthiophen-3-yl]-1,4-dihydropyrimidine;hydrochloride 1449702-80-0 C16H15ClN2S*ClH
    4-[2-(2-Chlorophenyl)-4,5-dimethylthiophen-3-yl]-1,4-dihydropyrimidine;hydrochloride
    —— 4-chloro-6-(3-nitrophenyl)-2,1,3-benzoxadiazole 871511-43-2 C12H6ClN3O3
    4-chloro-6-(3-nitrophenyl)-2,1,3-benzoxadiazole
    —— 4-(4-(trifluoromethoxy)phenyl)-4-pentenoic acid 1254701-52-4 C12H11F3O3
    4-(4-(trifluoromethoxy)phenyl)-4-pentenoic acid
    —— 4-[(2-(3-[Amino(imino)methyl]phenyl)-4-(5-[(2R,6S)-2,6-dimethyltetrahydro-1(2H)-pyridinyl]pentyl)-3-oxo-3,4-dihydro-6-quinoxalinyl)amino]butanoic acid 245554-44-3 C31H42N6O3
    4-[(2-(3-[Amino(imino)methyl]phenyl)-4-(5-[(2R,6S)-2,6-dimethyltetrahydro-1(2H)-pyridinyl]pentyl)-3-oxo-3,4-dihydro-6-quinoxalinyl)amino]butanoic acid
    —— 4-{[(S)-2-oxo-3-(3-oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-6-yl)-oxazolidin-5-ylmethyl]-amino} piperidine-1-carboxylic acid tert-butyl ester 1434080-21-3 C21H29N5O6
    4-{[(S)-2-oxo-3-(3-oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-6-yl)-oxazolidin-5-ylmethyl]-amino} piperidine-1-carboxylic acid tert-butyl ester
    —— 4-chloro-3-oxo-5-phenyl-3<i>H</i>-isoxazole-2-carboxylic acid diisopropylamide 41644-21-7 C16H19ClN2O3
    4-chloro-3-oxo-5-phenyl-3<i>H</i>-isoxazole-2-carboxylic acid diisopropylamide
    —— 4-dimethylamino-3-ethyl-3-methylpiperidine 473838-82-3 C10H22N2
    4-dimethylamino-3-ethyl-3-methylpiperidine
    —— 4-hydroxy-1-(4-phenylsulfinylbenzyl)pyrrolidin-2-one 262863-98-9 C17H17NO3S
    4-hydroxy-1-(4-phenylsulfinylbenzyl)pyrrolidin-2-one
    —— 4-(3-methyl-piperazin-1-yl)-N-3-nitrophenyl-benzenesulfonamide 475280-22-9 C17H20N4O4S
    4-(3-methyl-piperazin-1-yl)-N-3-nitrophenyl-benzenesulfonamide
    —— 4-{3-[(Z)-(5-hydroxy-3-oxo-1-benzofuran-2(3H)-ylidene)methyl]-5-methoxy-1hindol-1-yl}butanenitrile 1200542-15-9 C22H18N2O4
    4-{3-[(Z)-(5-hydroxy-3-oxo-1-benzofuran-2(3H)-ylidene)methyl]-5-methoxy-1hindol-1-yl}butanenitrile
    —— 4-hydroxy-3-nitro-naphthalene-1-sulfonic acid ; sodium-salt 92988-33-5 C10H6NO6S*Na
    4-hydroxy-3-nitro-naphthalene-1-sulfonic acid ; sodium-salt
    —— 4-acetyl-3-carboxyl-1-methylpiperazine-2,5-dione 865879-18-1 C8H10N2O5
    4-acetyl-3-carboxyl-1-methylpiperazine-2,5-dione
    —— (4S,5S)-5-[2-iodo-5-(trifluoromethyl)phenyl]-4-methyl-1,3-oxazolidin-2-one 875446-95-0 C11H9F3INO2
    (4S,5S)-5-[2-iodo-5-(trifluoromethyl)phenyl]-4-methyl-1,3-oxazolidin-2-one
    —— 4-[((S)-2-Acetoxy-1-methylethyl)amino]-3-nitrobenzonitrile 320407-12-3 C12H13N3O4
    4-[((S)-2-Acetoxy-1-methylethyl)amino]-3-nitrobenzonitrile
    —— (4,9-bis(4-tolylsulfonyl)-4,9-diazadodeca-1,11-dien-6-yne)dinickel(0) 1,5-cyclooctadiene 1423877-04-6 C32H40N2Ni2O4S2
    (4,9-bis(4-tolylsulfonyl)-4,9-diazadodeca-1,11-dien-6-yne)dinickel(0) 1,5-cyclooctadiene
    —— 4-(3-{5-fluoro-2-[3-(4-fluoro-3-trifluoromethylphenyl)-5,5-dimethyl-2,4-dioxoimidazolidin-1-ylmethyl]phenyl}ureido)benzenesulfonyl chloride 1179330-02-9 C26H20ClF5N4O5S
    4-(3-{5-fluoro-2-[3-(4-fluoro-3-trifluoromethylphenyl)-5,5-dimethyl-2,4-dioxoimidazolidin-1-ylmethyl]phenyl}ureido)benzenesulfonyl chloride
    —— 4-(3,6-dimethyl-3,6-dihydro-2H-thiopyran-4-ylethynyl)-1,2,5-trimethyl-piperidin-4-ol 98397-35-4 C17H27NOS
    4-(3,6-dimethyl-3,6-dihydro-2H-thiopyran-4-ylethynyl)-1,2,5-trimethyl-piperidin-4-ol
    —— 4-chlorobutyric acid 5-(4-chlorobutyrylamino)-2-[(2-methoxyethyl)methylamino]benzyl ester 943513-32-4 C19H28Cl2N2O4
    4-chlorobutyric acid 5-(4-chlorobutyrylamino)-2-[(2-methoxyethyl)methylamino]benzyl ester
    —— 4α-carboxy-1α,7β,11α,13α-tetrahydroxy-13,16-seco-ent-19-norbeyeran-16-oic acid 13,16-lactone 1012877-00-7 C20H30O7
    4α-carboxy-1α,7β,11α,13α-tetrahydroxy-13,16-seco-ent-19-norbeyeran-16-oic acid 13,16-lactone
    —— (4aS,6R,7S,8aR)-6-(tert-Butyl-dimethyl-silanyloxymethyl)-2,2,4a-trimethyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-ol 312308-24-0 C17H34O5Si
    (4aS,6R,7S,8aR)-6-(tert-Butyl-dimethyl-silanyloxymethyl)-2,2,4a-trimethyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-ol
    —— 4-(2-Amino-5-nitroso-6-oxo-1,6-dihydro-pyrimidin-4-ylamino)-N-[(2R,3S,4R,5R)-5-(6-amino-purin-9-yl)-3,4-dihydroxy-tetrahydro-furan-2-ylmethyl]-butyramide 108257-26-7 C18H23N11O6
    4-(2-Amino-5-nitroso-6-oxo-1,6-dihydro-pyrimidin-4-ylamino)-N-[(2R,3S,4R,5R)-5-(6-amino-purin-9-yl)-3,4-dihydroxy-tetrahydro-furan-2-ylmethyl]-butyramide
    —— 4-iodo-3-isopropoxy-7,8-dihydro-6H-cyclohepta[d]isoxazole 1176201-48-1 C11H14INO2
    4-iodo-3-isopropoxy-7,8-dihydro-6H-cyclohepta[d]isoxazole
    —— 4-(2,6-diphenyl-pyran-4-ylidene)-2-methyl-4<i>H</i>-oxazol-5-one 53711-10-7 C21H15NO3
    4-(2,6-diphenyl-pyran-4-ylidene)-2-methyl-4<i>H</i>-oxazol-5-one
    —— 4-(2-chlorophenyl)-5-(5-methylisoxazol-3-yl)-4H-1,2,4-triazole-3-thiol 1029889-09-5 C12H9ClN4OS
    4-(2-chlorophenyl)-5-(5-methylisoxazol-3-yl)-4H-1,2,4-triazole-3-thiol
    —— 4-phenylcyclohex-1-en-1-ylboronic acid 1402704-13-5 C12H15BO2
    4-phenylcyclohex-1-en-1-ylboronic acid
    —— 4-Isobutylamino-cyclohexanol 162337-95-3 C10H21NO
    4-Isobutylamino-cyclohexanol
    —— 4,4,5,5,6,6,7,7,7-Nonafluoro-2-(3-methyl-butyl)-heptanoic acid propyl ester 112238-36-5 C15H21F9O2
    4,4,5,5,6,6,7,7,7-Nonafluoro-2-(3-methyl-butyl)-heptanoic acid propyl ester
    —— 4,6-dioxo-2-thioxo-1-p-tolyl-piperidine-3-carboxylic acid ethyl ester 861044-41-9 C15H15NO4S
    4,6-dioxo-2-thioxo-1-p-tolyl-piperidine-3-carboxylic acid ethyl ester
    —— 4-Bromo-3-(4-bromo-phenyl)-1H-pyrazole 17978-25-5 C9H6Br2N2
    4-Bromo-3-(4-bromo-phenyl)-1H-pyrazole
    —— 4-chloro-3-(3-phenylmethoxyphenyl)-1H-pyrrolo[3,2-c]pyridine 913698-25-6 C20H15ClN2O
    4-chloro-3-(3-phenylmethoxyphenyl)-1H-pyrrolo[3,2-c]pyridine
    —— 4-Nitro-benzoic acid (S)-1-((S)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)-tetradec-13-enyl ester 81662-58-0 C27H41NO6
    4-Nitro-benzoic acid (S)-1-((S)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl)-tetradec-13-enyl ester
    —— 4-fluoro-2-[1-(3-methoxynaphthoyl)]benzoic acid 192384-04-6 C19H13FO4
    4-fluoro-2-[1-(3-methoxynaphthoyl)]benzoic acid
    —— (4-toy)2(1-na)Si(Oet) 18840-24-9 C26H26OSi
    (4-toy)2(1-na)Si(Oet)
    —— 4-((S)-2,3-Dihydroxy-propyl)-5H-furan-2-one 60915-82-4 C7H10O4
    4-((S)-2,3-Dihydroxy-propyl)-5H-furan-2-one
    —— 4-(4-Hydroxyphenyl)-10-thia-3,5,6,8-tetrazatricyclo[7.3.0.02,6]dodeca-1(9),2,4,11-tetraen-7-one 1007564-81-9 C13H8N4O2S
    4-(4-Hydroxyphenyl)-10-thia-3,5,6,8-tetrazatricyclo[7.3.0.02,6]dodeca-1(9),2,4,11-tetraen-7-one
    —— 4-{4-[3-(4-[1,3]Dioxan-2-yl-phenyl)-1-methyl-buta-1,2-dienyl]-phenyl}-2-{4-[1-methyl-3-(4-trimethylsilanylethynyl-phenyl)-buta-1,2-dienyl]-phenyl}-but-3-yn-2-ol 259110-20-8 C47H48O3Si
    4-{4-[3-(4-[1,3]Dioxan-2-yl-phenyl)-1-methyl-buta-1,2-dienyl]-phenyl}-2-{4-[1-methyl-3-(4-trimethylsilanylethynyl-phenyl)-buta-1,2-dienyl]-phenyl}-but-3-yn-2-ol
    —— 4-(chloromethyl)-2-phenyl-1,3-dithiolane 14060-39-0 C10H11ClS2
    4-(chloromethyl)-2-phenyl-1,3-dithiolane
    —— 4-((4,5-bis(3-nitrophenyl)-2H-1,2,3-triazol-2-yl)methyl)benzonitrile 1384848-72-9 C22H14N6O4
    4-((4,5-bis(3-nitrophenyl)-2H-1,2,3-triazol-2-yl)methyl)benzonitrile
    —— 4-(4-(4-(dimethylamino)-3-fluorophenyl)-5-hydroxy-4H-1,2,4-triazol-3-yl)-6-isopropylbenzene-1,3-diol 1050501-03-5 C19H21FN4O3
    4-(4-(4-(dimethylamino)-3-fluorophenyl)-5-hydroxy-4H-1,2,4-triazol-3-yl)-6-isopropylbenzene-1,3-diol
    —— 4-Cyclopentyl-4,5-trimethylen-dodecahydro-as-indacen 10515-95-4 C20H32
    4-Cyclopentyl-4,5-trimethylen-dodecahydro-as-indacen
    —— 4-chloro-3-(2-{3-[4-(2-hydroxyethyl)piperazin-1-yl]-5-hydroxymethylphenylamino}quinazolin-6-yl)phenol 1352930-55-2 C27H28ClN5O3
    4-chloro-3-(2-{3-[4-(2-hydroxyethyl)piperazin-1-yl]-5-hydroxymethylphenylamino}quinazolin-6-yl)phenol
    —— 4-(6-(4-acetylpiperazin-1-yl)-2-(methylamino)pyrimidin-4-yl)-N-(2-(4-(aminomethyl)piperidin-1-yl)-3-fluorophenyl)-1H-imidazole-2-carboxamide 1350917-32-6 C27H35FN10O2
    4-(6-(4-acetylpiperazin-1-yl)-2-(methylamino)pyrimidin-4-yl)-N-(2-(4-(aminomethyl)piperidin-1-yl)-3-fluorophenyl)-1H-imidazole-2-carboxamide
    —— 4-(2,3-difluoro-4-methyl-benzyl)-1-isopropyl-5-methyl-3-(2,3,4,6-tetra-O-benzyl-β-D-glucopyranos-1-yloxy)-1H-pyrazole 922720-27-2 C49H52F2N2O6
    4-(2,3-difluoro-4-methyl-benzyl)-1-isopropyl-5-methyl-3-(2,3,4,6-tetra-O-benzyl-β-D-glucopyranos-1-yloxy)-1H-pyrazole
    —— 4-(m-Anisidino)-1-benzylpiperidin-4-carbonsaeuremethylester-oxalat 61085-65-2 C2H2O4*C21H26N2O3
    4-(m-Anisidino)-1-benzylpiperidin-4-carbonsaeuremethylester-oxalat
    —— 4-o-Bromphenoxy-2-acetoxybutan 61904-18-5 C12H15BrO3
    4-o-Bromphenoxy-2-acetoxybutan
    —— 4-Hydroxy-benzoic acid 4-(2-chloro-5-methyl-phenoxy)-butyl ester 60222-27-7 C18H19ClO4
    4-Hydroxy-benzoic acid 4-(2-chloro-5-methyl-phenoxy)-butyl ester
    —— 4-[5-(3-aminopropyl)-1,2,4-oxadiazol-3-yl]-N,N-dimethylaniline;hydrochloride 1573548-48-7 C13H19ClN4O
    4-[5-(3-aminopropyl)-1,2,4-oxadiazol-3-yl]-N,N-dimethylaniline;hydrochloride