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中文名称 英文名称 CAS号 化学式 结构式图片
—— 4,5α-epoxy-3-methoxy-7,7,17-trimethylmorphinan-6β-ol 77794-03-7 C20H27NO3
4,5α-epoxy-3-methoxy-7,7,17-trimethylmorphinan-6β-ol
—— 4-androstene-17β-propionyloxy-3-spiro-2'-(4'-ethoxycarbonyl-1',3'-thiazolidine) 82890-37-7 C27H41NO4S
4-androstene-17β-propionyloxy-3-spiro-2'-(4'-ethoxycarbonyl-1',3'-thiazolidine)
—— 4-methyl-1,2-diphenylhexane-1,5-dione 97079-83-9 C19H20O2
4-methyl-1,2-diphenylhexane-1,5-dione
—— 4-((3R,5R,8R,9S,10S,13R,14S,17R)-14-hydroxy-3-(methoxyamino)-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)furan-2(5H)-one 868753-50-8 C24H37NO4
4-((3R,5R,8R,9S,10S,13R,14S,17R)-14-hydroxy-3-(methoxyamino)-10,13-dimethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl)furan-2(5H)-one
—— ((4-bromonaphthalen-1-yl)sulfonyl)-L-glutamic acid 1227059-55-3 C15H14BrNO6S
((4-bromonaphthalen-1-yl)sulfonyl)-L-glutamic acid
—— 4-[((E)-1-[2-hydroxy-5-[(E)-2-(2-carboxyphenyl)-1-diazenyl]phenyl]methylidene)amino]chlorobenzene 825629-04-7 C20H14ClN3O3
4-[((E)-1-[2-hydroxy-5-[(E)-2-(2-carboxyphenyl)-1-diazenyl]phenyl]methylidene)amino]chlorobenzene
—— (4aS,6aR,7S,9R,11aR,11bS)-4,4,11b-trimethyl-8-methylenetetradecahydro-6a,9-methanocyclohepta[a]naphthalen-7-yl acetate 43084-76-0 C22H34O2
(4aS,6aR,7S,9R,11aR,11bS)-4,4,11b-trimethyl-8-methylenetetradecahydro-6a,9-methanocyclohepta[a]naphthalen-7-yl acetate
—— 4,4''-bis(trifluoromethyl)-1,1':2',1''-terphenyl 1160096-67-2 C20H12F6
4,4''-bis(trifluoromethyl)-1,1':2',1''-terphenyl
—— 4-Butenyl-triphenylphosphonium iodide 127301-75-1 C22H22P*I
4-Butenyl-triphenylphosphonium iodide
—— 4-(1,1-dichloropropyl)-2-oxetanone 96165-30-9 C6H8Cl2O2
4-(1,1-dichloropropyl)-2-oxetanone
—— (-)-(4aS,7R,8aR)-7-methylsulfonyloxy-5-methylene-8a-methyl-decahydronaphthalen-2-one 89949-92-8 C13H20O4S
(-)-(4aS,7R,8aR)-7-methylsulfonyloxy-5-methylene-8a-methyl-decahydronaphthalen-2-one
—— 4-O-acetyl-1,5-anhydro-2-O-benzoyl-3-oxo-L-arabino-pentitol (p-tolylsulfonyl)hydrazone 122948-65-6 C21H22N2O7S
4-O-acetyl-1,5-anhydro-2-O-benzoyl-3-oxo-L-arabino-pentitol (p-tolylsulfonyl)hydrazone
—— (4R,5S)-5-[(1R,3S)-5-(tert-Butyl-diphenyl-silanyloxy)-1,3-dimethyl-pentyl]-4-methyl-dihydro-furan-2-one 105676-33-3 C28H40O3Si
(4R,5S)-5-[(1R,3S)-5-(tert-Butyl-diphenyl-silanyloxy)-1,3-dimethyl-pentyl]-4-methyl-dihydro-furan-2-one
—— 4-chloro-2-(3-(trifluoromethyl)phenyl)pteridine 849776-69-8 C13H6ClF3N4
4-chloro-2-(3-(trifluoromethyl)phenyl)pteridine
—— (4S)-N-[2-(indol-3-yl)-ethyl]-4-ethyl-4-hydroxymethyl-6-hydroxyhexamide 393563-16-1 C19H28N2O3
(4S)-N-[2-(indol-3-yl)-ethyl]-4-ethyl-4-hydroxymethyl-6-hydroxyhexamide
—— 4-nitrophenyl 5-acetamido-3,4,5-trideoxy-4-methoxy-D-glycero-α-D-galacto-non-2-ulopyranosylonic acid 136690-52-3 C18H24N2O11
4-nitrophenyl 5-acetamido-3,4,5-trideoxy-4-methoxy-D-glycero-α-D-galacto-non-2-ulopyranosylonic acid
—— (4S)-5-(tert-butyldiphenylsilyloxy)-4-hydroxypentylacetate 929897-36-9 C23H32O4Si
(4S)-5-(tert-butyldiphenylsilyloxy)-4-hydroxypentylacetate
—— 4-(4-chlorophenyl)-3-indolin-1-ylbutan-2-one methoxime 605681-42-3 C19H21ClN2O
4-(4-chlorophenyl)-3-indolin-1-ylbutan-2-one methoxime
—— 4,5-dichloro-2-(phenylthio)benzyl alcohol 93361-98-9 C13H10Cl2OS
4,5-dichloro-2-(phenylthio)benzyl alcohol
—— (4R,4aR,7aR,12bS)-9-methoxy-3-methyl-7-morpholin-4-yl-2,4,4a,5,7a,13-hexahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinoline 14075-37-7 C22H28N2O3
(4R,4aR,7aR,12bS)-9-methoxy-3-methyl-7-morpholin-4-yl-2,4,4a,5,7a,13-hexahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinoline
—— 4-Methyl-1-(6-methyl-benzothiazol-2-yl)-4,5-dihydro-1H-pyrazol-3-ylamine 126015-64-3 C12H14N4S
4-Methyl-1-(6-methyl-benzothiazol-2-yl)-4,5-dihydro-1H-pyrazol-3-ylamine
—— 4-(1,3,5-trimethylpyrazol-4-yl)spinacine 1206607-09-1 C13H17N5O2
4-(1,3,5-trimethylpyrazol-4-yl)spinacine
—— {4-[2-(4-Chloro-phenyl)-6-oxo-4-thioxo-6H-1-oxa-3b,5-diaza-cyclopenta[a]pentalen-5-yl]-3,3-dimethyl-butyrylamino}-acetic acid 898552-49-3 C22H20ClN3O5S
{4-[2-(4-Chloro-phenyl)-6-oxo-4-thioxo-6H-1-oxa-3b,5-diaza-cyclopenta[a]pentalen-5-yl]-3,3-dimethyl-butyrylamino}-acetic acid
—— 4-[7-morpholin-4-yl-3-(2,2,2-trifluoroethyl)-3H-[1,2,3]triazolo[4,5-d]pyrimidin-5-yl]aniline 1173205-99-6 C16H16F3N7O
4-[7-morpholin-4-yl-3-(2,2,2-trifluoroethyl)-3H-[1,2,3]triazolo[4,5-d]pyrimidin-5-yl]aniline
—— 4-((4R,5S,6S)-5-Benzyloxy-6-benzyloxymethyl-[1,3]dioxan-4-yl)-piperidine-2,6-dione 102487-44-5 C24H27NO6
4-((4R,5S,6S)-5-Benzyloxy-6-benzyloxymethyl-[1,3]dioxan-4-yl)-piperidine-2,6-dione
—— (4R,9aS)-3-((R)-3,4-bis((tert-butyldimethylsilyl)oxy)butyl)-4-((tert-butyldimethylsilyl)oxy)-8-methoxy-9,9a-dihydro-1H-cyclopenta[b]naphthalen-2(4H)-one 1613271-15-0 C36H64O5Si3
(4R,9aS)-3-((R)-3,4-bis((tert-butyldimethylsilyl)oxy)butyl)-4-((tert-butyldimethylsilyl)oxy)-8-methoxy-9,9a-dihydro-1H-cyclopenta[b]naphthalen-2(4H)-one
—— 4-N-{6-[3-nitro-4-(methoxyoxalamidomethyl)]benzamidohexyl}-5'-O-(4,4'-dimethoxytrityl)-2'-deoxycytidine 912558-45-3 C47H52N6O12
4-N-{6-[3-nitro-4-(methoxyoxalamidomethyl)]benzamidohexyl}-5'-O-(4,4'-dimethoxytrityl)-2'-deoxycytidine
—— 4-(2-((3-aminopropyl)(propyl)amino)ethyl)indolin-2-one 1632235-97-2 C16H25N3O
4-(2-((3-aminopropyl)(propyl)amino)ethyl)indolin-2-one
—— 4-hydroxy-6,6-diphenyl-5,6-dihydro-2H-pyran-2-one 169601-99-4 C17H14O3
4-hydroxy-6,6-diphenyl-5,6-dihydro-2H-pyran-2-one
—— (4R)-trans-2-(Lr-1tF,2cF,3rF,4-tetraacetoxy-but-catF-yl)-thiazolidine-4-carboxylic acid methyl ester 59184-27-9 C17H25NO10S
(4R)-trans-2-(Lr-1tF,2cF,3rF,4-tetraacetoxy-but-catF-yl)-thiazolidine-4-carboxylic acid methyl ester
—— (4aR*,8S*,8aS*)-1-ethoxy-8-phenyl-3,4,4a,7,8,8a-hexahydroisoquinol-3-one 108306-33-8 C17H19NO2
(4aR*,8S*,8aS*)-1-ethoxy-8-phenyl-3,4,4a,7,8,8a-hexahydroisoquinol-3-one
—— 4-(1,1,1,3,3,3-hexafluoro-2-hydroxy-2-propyl)-N-<2,2-bis(trifluoromethyl)-5-(1,1,1,3,3,3-hexafluoro-2-hydroxy-2-propyl)-3-tetrahydrofuryl>-N-methylaniline 96569-50-5 C19H13F18NO3
4-(1,1,1,3,3,3-hexafluoro-2-hydroxy-2-propyl)-N-<2,2-bis(trifluoromethyl)-5-(1,1,1,3,3,3-hexafluoro-2-hydroxy-2-propyl)-3-tetrahydrofuryl>-N-methylaniline
—— 4-[4-(N-benzyloxycarbonyl)amino-1,3-dihydro-1-oxo-2H-isoindol-2-yl]isoglutamine 1198299-71-6 C21H21N3O6
4-[4-(N-benzyloxycarbonyl)amino-1,3-dihydro-1-oxo-2H-isoindol-2-yl]isoglutamine
—— 4-[((E)-1-(2-hydroxy-5-[(E)-2-(phenyl)-1-diazenyl]phenyl)methylidene)amino]benzoic acid 1196480-85-9 C20H15N3O3
4-[((E)-1-(2-hydroxy-5-[(E)-2-(phenyl)-1-diazenyl]phenyl)methylidene)amino]benzoic acid
—— (4<i>R</i>)-3-acetyl-2<i>c</i>-(<i>L</i><sub>r</sub>-1<i>t</i><sub>F</sub>,2<i>c</i><sub>F</sub>,3<i>r</i><sub>F</sub>,4-tetraacetoxy-but-<i>cat</i><sub>F</sub>-yl)-thiazolidine-4<i>r</i>-carboxylic acid amide 59184-29-1 C18H26N2O10S
(4<i>R</i>)-3-acetyl-2<i>c</i>-(<i>L</i><sub>r</sub>-1<i>t</i><sub>F</sub>,2<i>c</i><sub>F</sub>,3<i>r</i><sub>F</sub>,4-tetraacetoxy-but-<i>cat</i><sub>F</sub>-yl)-thiazolidine-4<i>r</i>-carboxylic acid amide
—— 4-(2-methylaziridin-1-yl)benzaldehyde 353247-82-2 C10H11NO
4-(2-methylaziridin-1-yl)benzaldehyde
—— 4-N-benzoyl-1-(2-O-benzoyl-3,4-O-isopropylidene-α-L-arabinopyranosyl)cytosine 144216-80-8 C26H25N3O7
4-N-benzoyl-1-(2-O-benzoyl-3,4-O-isopropylidene-α-L-arabinopyranosyl)cytosine
—— (4S,5R,6S)-5-(tert-Butyl-dimethyl-silanyloxy)-6-(2,6-dioxo-piperidin-4-yl)-[1,3]dioxane-4-carbaldehyde 108926-33-6 C16H27NO6Si
(4S,5R,6S)-5-(tert-Butyl-dimethyl-silanyloxy)-6-(2,6-dioxo-piperidin-4-yl)-[1,3]dioxane-4-carbaldehyde
—— 4-acetyl-3-ethoxy-5,6-dihydro-4<i>H</i>-[1,2,4]thiadiazine 1,1-dioxide 53788-83-3 C7H12N2O4S
4-acetyl-3-ethoxy-5,6-dihydro-4<i>H</i>-[1,2,4]thiadiazine 1,1-dioxide
—— (4S,5S)-4-Hydroxy-5-methyl-2-phenylsulfanyl-7-trityloxy-heptanoic acid 115479-77-1 C33H34O4S
(4S,5S)-4-Hydroxy-5-methyl-2-phenylsulfanyl-7-trityloxy-heptanoic acid
—— 4β-Bromr-5β-azido-androstanol-17β-on-3-propionat 18586-67-9 C22H32BrN3O3
4β-Bromr-5β-azido-androstanol-17β-on-3-propionat
—— 4-tert-butyl-2-{[2-(1H-imidazol-4-yl)-ethylimino]-methyl}-phenol 1374255-30-7 C16H21N3O
4-tert-butyl-2-{[2-(1H-imidazol-4-yl)-ethylimino]-methyl}-phenol
—— 4-(2-carboxyethyl)-2-cyclohexyl-5-oxo-2,5-dihydrooxazole 3-oxide 1221411-37-5 C12H17NO5
4-(2-carboxyethyl)-2-cyclohexyl-5-oxo-2,5-dihydrooxazole 3-oxide
—— <4,5-dichloro-2-(phenylthio)phenyl>acetic acid 93362-00-6 C14H10Cl2O2S
<4,5-dichloro-2-(phenylthio)phenyl>acetic acid
—— 4-(acetoxy)benzyl chloroformate 86157-54-2 C10H9ClO4
4-(acetoxy)benzyl chloroformate
—— 4-[6-(8-cyclopentyl-6-iodo-5-methyl-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-2-ylamino)pyridin-3-yl]piperazine-1-carboxylic acid tert-butyl ester 571189-22-5 C27H34IN7O3
4-[6-(8-cyclopentyl-6-iodo-5-methyl-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-2-ylamino)pyridin-3-yl]piperazine-1-carboxylic acid tert-butyl ester
—— 4'-Brom-N-methyl-1,2-propadien-1-carboxanilid 102235-72-3 C11H10BrNO
4'-Brom-N-methyl-1,2-propadien-1-carboxanilid
—— 4β-Chlor-5β-amino-androstandiol-(3β,17β)-17-propionat 18586-80-6 C22H36ClNO3
4β-Chlor-5β-amino-androstandiol-(3β,17β)-17-propionat
—— 4,6-difluoro-1-(4-piperidinyl)-1,3-dihydro-2H-benzimidazol-2-one hydrochloride 1065652-85-8 C12H13F2N3O*ClH
4,6-difluoro-1-(4-piperidinyl)-1,3-dihydro-2H-benzimidazol-2-one hydrochloride
—— 4-(Chloro-methoxy-methyl)-1,2-dimethoxy-benzene 162750-65-4 C10H13ClO3
4-(Chloro-methoxy-methyl)-1,2-dimethoxy-benzene