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    中文名称 英文名称 CAS号 化学式 结构式图片
    —— 5,6-O-isopropylidene-D-isoascorbic acid 50271-42-6 C9H12O6
    5,6-O-isopropylidene-D-isoascorbic acid
    —— 5-(3-Chlorophenyl)-7-formyl-8-methoxy-2-(methylamino)quinazoline 865185-41-7 C17H14ClN3O2
    5-(3-Chlorophenyl)-7-formyl-8-methoxy-2-(methylamino)quinazoline
    —— 5,6-didehydro-6-deoxyforskolin 1,9-sulphite 81826-84-8 C22H30O7S
    5,6-didehydro-6-deoxyforskolin 1,9-sulphite
    —— 5,6-O-isopropylidene-2-O-methoxymethyl-3-O-methyl-L-ascorbic acid 124685-00-3 C12H18O7
    5,6-O-isopropylidene-2-O-methoxymethyl-3-O-methyl-L-ascorbic acid
    —— 5,6-dihydro-4-hydroxy-6-(3-methylbutyl)-6-phenyl-2H-pyran-2-one 169602-00-0 C16H20O3
    5,6-dihydro-4-hydroxy-6-(3-methylbutyl)-6-phenyl-2H-pyran-2-one
    —— 5-methyl-2-(2-naphthyl)-4-oxazoleacetic acid methyl ester 157169-67-0 C17H15NO3
    5-methyl-2-(2-naphthyl)-4-oxazoleacetic acid methyl ester
    —— 5-acetamido-2-isopropoxy-6-(1,2,3-triacetoxypropyl)-5,6-dihydro-2H-pyran-2-carboxylic acid methyl ester 1035355-36-2 C21H31NO11
    5-acetamido-2-isopropoxy-6-(1,2,3-triacetoxypropyl)-5,6-dihydro-2H-pyran-2-carboxylic acid methyl ester
    —— 5-<4-(acetyloxy)-1-hydroxy-3-methoxy-2-methylpentyl>-dihydro-3,5-dimethyl-2-(3H)-furanone 144811-49-4 C15H26O6
    5-<4-(acetyloxy)-1-hydroxy-3-methoxy-2-methylpentyl>-dihydro-3,5-dimethyl-2-(3H)-furanone
    —— 5-[2-cyclopropyl-1-(2-fluorophenyl)-2-oxoethyl]-4,5,6,7-tetrahydrothieno[3,2-c]pyridin-2-yl acetate benzene sulfonate 952340-40-8 C6H6O3S*C20H20FNO3S
    5-[2-cyclopropyl-1-(2-fluorophenyl)-2-oxoethyl]-4,5,6,7-tetrahydrothieno[3,2-c]pyridin-2-yl acetate benzene sulfonate
    —— 5'-Desoxy-2',3'-O-isopropyliden-5'-adenosincarbonitril 59696-80-9 C14H16N6O3
    5'-Desoxy-2',3'-O-isopropyliden-5'-adenosincarbonitril
    —— 5,6-cis-1α-Acetoxyvitamin D<sub>3</sub> 67657-76-5 C29H46O3
    5,6-cis-1α-Acetoxyvitamin D<sub>3</sub>
    —— 5-acetamido-3,5-dideoxy-9-O-valeroyl-D-glycero-β-D-galacto-2-nonulopyranosonic acid 114857-62-4 C16H27NO10
    5-acetamido-3,5-dideoxy-9-O-valeroyl-D-glycero-β-D-galacto-2-nonulopyranosonic acid
    —— (5Z,9'Z)-Lycopene 145678-43-9 C40H56
    (5Z,9'Z)-Lycopene
    —— 5,10-bis(3,3-dimethylbut-1-en-1-yl)-5,10-dihydroboranthrene 1174742-42-7 C24H30B2
    5,10-bis(3,3-dimethylbut-1-en-1-yl)-5,10-dihydroboranthrene
    —— 5-methyl-3-methylene-4-oxo-6-(p-tolyl)-3a-trifluoromethyl-3,3a,4,5,-tetrahydro-1H-oxazolo<4,3-f><1,2,4>triazine 119811-63-1 C15H14F3N3O2
    5-methyl-3-methylene-4-oxo-6-(p-tolyl)-3a-trifluoromethyl-3,3a,4,5,-tetrahydro-1H-oxazolo<4,3-f><1,2,4>triazine
    —— 5-acetamido-2,7,8,9-tetra-O-benzoyl-3,5-dideoxy-D-glycero-β-D-galacto-2-nonulopyranosono-1,4-lactone 121409-23-2 C39H33NO12
    5-acetamido-2,7,8,9-tetra-O-benzoyl-3,5-dideoxy-D-glycero-β-D-galacto-2-nonulopyranosono-1,4-lactone
    —— 5-tert-butyl-3-{[5-tert-butyl-3-(pivaloylamino)-2-hydroxybenzoyl]amino}-2-hydroxybenzoic acid 849362-99-8 C27H36N2O6
    5-tert-butyl-3-{[5-tert-butyl-3-(pivaloylamino)-2-hydroxybenzoyl]amino}-2-hydroxybenzoic acid
    —— (5S)-17β-propionyloxy-5-thiobenzoyloxy-3,6-cyclo-4-nor-3,5-seco-6β-androstan-3-one 133123-14-5 C28H36O4S
    (5S)-17β-propionyloxy-5-thiobenzoyloxy-3,6-cyclo-4-nor-3,5-seco-6β-androstan-3-one
    —— (5S,3R,4R)-2-(phenylmethoxy)perhydro-2H-pyran-3,4,5-triol 184481-18-3 C12H16O5
    (5S,3R,4R)-2-(phenylmethoxy)perhydro-2H-pyran-3,4,5-triol
    —— 5-acetamido-3,5-dideoxy-D-erythro-L-manno-nonulosonic acid 117295-68-8 C11H18FNO9
    5-acetamido-3,5-dideoxy-D-erythro-L-manno-nonulosonic acid
    —— 5-acetamido-2,8,9-tri-O-benzoyl-3,5-dideoxy-D-glycero-β-D-galacto-2-nonulopyranosono-1,7-lactone 116897-97-3 C32H29NO11
    5-acetamido-2,8,9-tri-O-benzoyl-3,5-dideoxy-D-glycero-β-D-galacto-2-nonulopyranosono-1,7-lactone
    —— (5R)-3-[3-fluoro-4-(5-methoxyiminohexahydrocyclopenta[c]pyrrol-2-yl)phenyl]-5-(1,2,3-triazol-1-ylmethyl)oxazolidin-2-one 1395322-99-2 C20H23FN6O3
    (5R)-3-[3-fluoro-4-(5-methoxyiminohexahydrocyclopenta[c]pyrrol-2-yl)phenyl]-5-(1,2,3-triazol-1-ylmethyl)oxazolidin-2-one
    —— 5,7,8-trimethyl-2-((4R,8R)-4,8,12-trimethyltridecyl)chroman-6-yl acetate 1266594-84-6 C30H50O3
    5,7,8-trimethyl-2-((4R,8R)-4,8,12-trimethyltridecyl)chroman-6-yl acetate
    —— 5,5-Dimethyl-2-methylsulfonyl-3-methylsulfonylmethyl-Δ2-cyclohexenon-(1) 19916-45-1 C11H18O5S2
    5,5-Dimethyl-2-methylsulfonyl-3-methylsulfonylmethyl-Δ2-cyclohexenon-(1)
    —— 5-<4-acetoxy-2-(3-oxopentyl)-3,5,6-trimethylphenoxy>-2,2-dimethylpentanoic acid isopropyl ester 179337-46-3 C26H40O6
    5-<4-acetoxy-2-(3-oxopentyl)-3,5,6-trimethylphenoxy>-2,2-dimethylpentanoic acid isopropyl ester
    —— (5R)-3,6-cyclo-4-nor-3,5-seco-6β-androstan-3α,5,17β-triol 3-acetate 5-benzoate 17-propionate 133123-16-7 C30H40O6
    (5R)-3,6-cyclo-4-nor-3,5-seco-6β-androstan-3α,5,17β-triol 3-acetate 5-benzoate 17-propionate
    —— (5aS,7R,8R,8aR)-3-(2-deoxy-β-D-erythro-pentofuranosyl)-3,4,5a,7,8,8a-hexahydro-8-hydroxy-7-pentyl-10H-furo[2',3':4,5]imidazo[1,2-a]purin-10-one 118396-71-7 C19H27N5O6
    (5aS,7R,8R,8aR)-3-(2-deoxy-β-D-erythro-pentofuranosyl)-3,4,5a,7,8,8a-hexahydro-8-hydroxy-7-pentyl-10H-furo[2',3':4,5]imidazo[1,2-a]purin-10-one
    —— [5-acetyloxy-2-(4-fluorophenyl)-4-oxo-3-[[(E,7R,11R)-3,7,11,15-tetramethylhexadec-2-enyl]sulfanylmethyl]chromen-7-yl] acetate 138101-71-0 C40H53FO6S
    [5-acetyloxy-2-(4-fluorophenyl)-4-oxo-3-[[(E,7R,11R)-3,7,11,15-tetramethylhexadec-2-enyl]sulfanylmethyl]chromen-7-yl] acetate
    —— 5-acetoxy-7-methyl-7H-[1,4]oxathiino[3,2-e]indol-3-one 22218-47-9 C13H11NO4S
    5-acetoxy-7-methyl-7H-[1,4]oxathiino[3,2-e]indol-3-one
    —— 5-acetamido-4,7,8,9-tetra-O-acetyl-2,3,5-trideoxy-2-fluoro-D-glycero-α-D-galacto-2-nonulosonic acid methyl ester 91041-78-0 C20H28FNO12
    5-acetamido-4,7,8,9-tetra-O-acetyl-2,3,5-trideoxy-2-fluoro-D-glycero-α-D-galacto-2-nonulosonic acid methyl ester
    —— 5'-acetyl-3'-selenophenylthymidine 143422-80-4 C18H20N2O5Se
    5'-acetyl-3'-selenophenylthymidine
    —— 5R-(1H-imidazole-1-thiocarbonyloxy)-17β-propionyloxy-3,6-cyclo-4-nor-3,5-seco-6β-androstan-3-one 133123-26-9 C25H34N2O4S
    5R-(1H-imidazole-1-thiocarbonyloxy)-17β-propionyloxy-3,6-cyclo-4-nor-3,5-seco-6β-androstan-3-one
    —— 5-(4-hydroxy-7-methoxy-3,3-dimethylhept-5-en-1-yl)-4-methylfuran-2(5H)-one 114273-90-4 C15H24O4
    5-(4-hydroxy-7-methoxy-3,3-dimethylhept-5-en-1-yl)-4-methylfuran-2(5H)-one
    —— 5-(2-cyanopropyl)-1,3,4-triphenyl-4H-1,2,4-triazol-1-ium chloride 1608454-60-9 C24H21N4*Cl
    5-(2-cyanopropyl)-1,3,4-triphenyl-4H-1,2,4-triazol-1-ium chloride
    —— 5α-hydroxy-6β-[4-(3-aminopropylamino)-butylamino]-campestan-3β-ol 1438418-29-1 C35H67N3O2
    5α-hydroxy-6β-[4-(3-aminopropylamino)-butylamino]-campestan-3β-ol
    —— 5-(2,3-Butadienoyl)-10,11-dihydro-5H-dibenz<b,f>azepin 103149-03-7 C18H15NO
    5-(2,3-Butadienoyl)-10,11-dihydro-5H-dibenz<b,f>azepin
    —— 5,9,13-Trimethyl-4,8,12-tetradecatrienoylchlorid 22128-24-1 C17H27ClO
    5,9,13-Trimethyl-4,8,12-tetradecatrienoylchlorid
    —— 5-androstene-17β-propionyloxy-3-spiro-2'-(4'-ethoxycarbonyl-1',3'-thiazolidine) 82890-36-6 C27H41NO4S
    5-androstene-17β-propionyloxy-3-spiro-2'-(4'-ethoxycarbonyl-1',3'-thiazolidine)
    —— 5-methyl-3-methylene-4-oxo-6-phenyl-3a-trifluoromethyl-3,3a,4,5,-tetrahydro-1H-oxazolo<4,3-f><1,2,4>triazine 119811-62-0 C14H12F3N3O2
    5-methyl-3-methylene-4-oxo-6-phenyl-3a-trifluoromethyl-3,3a,4,5,-tetrahydro-1H-oxazolo<4,3-f><1,2,4>triazine
    —— 5-amino-5-deoxy-α-D-ribose-1,2-cyclic phosphate 1330004-15-3 C5H10NO6P
    5-amino-5-deoxy-α-D-ribose-1,2-cyclic phosphate
    —— 5-<1'-(imidazol-4''-yl)methyl>-2-thioxoimidazolidin-4-one 113185-61-8 C7H8N4OS*ClH
    5-<1'-(imidazol-4''-yl)methyl>-2-thioxoimidazolidin-4-one
    —— 5-hydroxy-5-(3-methoxyphenyl)-4-oxopentanoic acid 1424007-11-3 C12H14O5
    5-hydroxy-5-(3-methoxyphenyl)-4-oxopentanoic acid
    —— 5,8-dichloro-9,10-dioxo-9,10-dihydro-anthracene-1-sulfonic acid 93431-82-4 C14H6Cl2O5S
    5,8-dichloro-9,10-dioxo-9,10-dihydro-anthracene-1-sulfonic acid
    —— 5'-O-dimethoxytrityl-6-N-(4,9,13-triazatridecane-1-yl)-2'-deoxyadenosine 259141-08-7 C41H54N8O5
    5'-O-dimethoxytrityl-6-N-(4,9,13-triazatridecane-1-yl)-2'-deoxyadenosine
    —— 5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-1-(methoxycarbonyl)-D-glycero-α-D-galacto-2-nonulopyranosyl diethyl phosphite 145240-79-5 C24H38NO15P
    5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-1-(methoxycarbonyl)-D-glycero-α-D-galacto-2-nonulopyranosyl diethyl phosphite
    —— 5'-Deoxy-5'-iodo-2',3'-O,O-isopropylidene-5-methyluridine 77421-70-6 C13H17IN2O5
    5'-Deoxy-5'-iodo-2',3'-O,O-isopropylidene-5-methyluridine
    —— 5-bromo-2-(methylsulfonylmethyl)pyridine 1352754-05-2 C7H8BrNO2S
    5-bromo-2-(methylsulfonylmethyl)pyridine
    —— (5S,11bR)-5,11b-bis(hydroxymethyl)-2,5,6,11-tetrahydro-1H-indolizino[8,7-b]indol-3-one 82503-94-4 C16H18N2O3
    (5S,11bR)-5,11b-bis(hydroxymethyl)-2,5,6,11-tetrahydro-1H-indolizino[8,7-b]indol-3-one
    —— 5-methyl-1-(2-thioxothiazolidin-3-yl)hexane-1,4-dione 1384959-17-4 C10H15NO2S2
    5-methyl-1-(2-thioxothiazolidin-3-yl)hexane-1,4-dione
    —— 5-acetamido-2,3,5-trideoxy-3-fluoro-D-erythro-α-L-gluco-non-2-ulopyranosylonic fluoride 117295-64-4 C12H19F2NO8
    5-acetamido-2,3,5-trideoxy-3-fluoro-D-erythro-α-L-gluco-non-2-ulopyranosylonic fluoride