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    [4]轴烯 <4>Radialene 3227-91-6 C8H8
    [4]菲基异氰酸酯 [4]phenanthryl isocyanate 412036-27-2 C15H9NO
    [4]喹啉甲醇氢溴酸盐 4-(hydroxymethyl)quinoline hydrobromide 142910-39-2 BrH*C10H9NO
    [4]喹啉基-苯基-乙酸酰胺 [4]quinolyl-phenyl-acetic acid amide 101444-31-9 C17H14N2O
    [4]吡啶基-乙酸苯胺 N-phenyl-2-(pyridin-4-yl)acetamide 100723-90-8 C13H12N2O
    [4S-(4alpha,7beta,7aalpha)]-7,7a-二氢-7-羟基-4-甲氧基-4H-呋喃并[3,2-c]吡喃-2(6H)-酮 (4S,7S,7aR)-7-hydroxy-4-methoxy-7,7a-dihydrofuro<3,2-c>pyran-2(4H,6H)-one 123251-08-1 C8H10O5
    [4S(RS),5S]-5-(环己基甲基)-4-[(四氢-2H-吡喃-2-基)氧基]-2-氧代-1-吡咯烷羧酸1,1-二甲基乙基酯 [4S(RS),5S]-5-(cyclohexylmethyl)-4-[(tetrahydro-2H-pyran-2-yl)oxy]-2-oxo-1-pyrrolidinecarboxylic acid, 1,1-dimethylethyl ester 126910-79-0 C21H35NO5
    [4-（哌嗪-1-羰基）苯基]硼酸频哪醇酯盐酸盐 Piperazin-1-yl(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)methanone hydrochloride 1256360-65-2 C17H26BClN2O3
    [4-（5-甲基-1,3-苯并恶唑-2-基）环己基]-甲胺 1-[trans-4-(5-Methyl-1,3-benzoxazol-2-yl)cyclohexyl]methanamine 1217702-12-9 C15H20N2O
    [4-（4-氨基苯甲酰基）氧基苯基]4-氨基苯甲酸酯 1,4-Phenylene-di-4-aminobenzoate 22095-98-3 C20H16N2O4
    [4-（4'-氨基吗啉-1-羰基）苯基]硼酸频哪醇酯 N-(morpholin-4-yl)-4-(4,4,5,5,-tetramethyl-[1,3,2]dioxaborolan-2-yl)benzamide 879486-47-2 C17H25BN2O4
    [4-（1-金刚烷基）-1,3-噻唑-2-基]乙腈 4-(1-adamantyl)-2-cyanomethylthiazole 497933-44-5 C15H18N2S
    [4-（1,3-二恶烷-2-基）苯基]-硼酸（9CI） p-(1,3-dioxan-2-yl)phenylboronic acid 254454-02-9 C10H13BO4
    [4-（1'-氨基-4'-甲基哌嗪-1-羰基）苯基]硼酸频哪醇酯 4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-N-(4-methylpiperazin-1-yl)benzamide 879486-21-2 C18H28BN3O3
    [4-苯胺基-1-(2-苯基乙基)哌啶-4-基]甲醇 4-(N-phenylamino)-1-(2-phenylethyl)-4-piperidinylmethanol 61086-05-3 C20H26N2O
    [4-苄氧基-4'-(三氟甲氧基)联苯基-3-基]乙酸 [4-benzyloxy-4'-(trifluoromethoxy)biphenyl-3-yl]acetic acid 1018958-65-0 C22H17F3O4
    [4-苄基-9-(4-甲基哌嗪-1-基)-4,8,10-三氮杂双环[4.4.0]癸-7,9,11-三烯-7-基]肼 6-Benzyl-2-(4-methyl-piperazino)-4-hydrazino-5,6,7,8-tetrahydro-pyrido<4,3-d>pyrimidin 7128-27-0 C19H27N7
    [4-羟基甲基-1-(甲苯-4-磺酰基)-哌啶-4-基]-甲醇 [1-(4-methylbenzene-1-sulfonyl)piperidine-4,4-diyl]dimethanol 1523618-34-9 C14H21NO4S
    [4-羟基-5-[(1,2,3,4-四氢-2,4-二氧代-3-喹啉基)偶氮]-1,3-苯二磺酸根合]铜酸二钠 Cuprate(2-), [4-(hydroxy-kappaO)-5-[[1,2,3,4-tetrahydro-2-oxo-4-(oxo-kappaO)-3-quinolinyl]azo-kappaN1]-1,3-benzenedisulfonato(4-)]-, disodium 72139-09-4 C15H11CuN3Na2O9S2+4
    [4-羟基-5-(羟基甲基)四氢呋喃-2-基]氧基膦酸 2'-deoxyribose-1-phosphate 17210-42-3 C5H11O7P
    [4-羟基-3-[1-羟基-2-(1-甲基-2,6-二氧代-4-哌啶基)乙基]-1,5-二甲基-环己基]乙酸酯 [4-Hydroxy-3-[1-hydroxy-2-(1-methyl-2,6-dioxopiperidin-4-yl)ethyl]-1,5-dimethylcyclohexyl] acetate 23271-79-6 C18H29NO6
    [4-羟基-3-(3-甲基丁-2-烯基)苯基]甲基 (2R)-4-羟基-3-(4-羟基苯基)-2-甲基-5-氧代呋喃-2-羧酸酯 butyrolactone I 87414-49-1 C24H24O7
    [4-羟基-3-(2-甲氧基苯甲酰基)苯基]-(2-羟基-5-甲基苯基)甲酮 [4-hydroxy-3-(2-methoxybenzoyl)phenyl]-(2-hydroxy-5-methylphenyl)methanone 1005791-77-4 C22H18O5
    [4-羟基-2-(羟基甲基)-6-[(7-羟基-4-氧代-1,3a,5,6,7,7a-六氢咪唑并[4,5-c]吡啶-2-基)氨基]-5-[甲基-(2-甲基氨基乙酰基)氨基]四氢吡喃-3-基]氨基甲酸酯 [4-Hydroxy-2-(hydroxymethyl)-6-[(7-hydroxy-4-oxo-1,3a,5,6,7,7a-hexahydroimidazo[4,5-c]pyridin-2-yl)amino]-5-[methyl-[2-(methylamino)acetyl]amino]oxan-3-yl] carbamate 38621-52-2 C17H29N7O8
    [4-甲酰基-5-(羟基甲基)-2-甲基吡啶-3-基]氢硫酸盐 Pyridoxal 3-sulfate 107467-08-3 C8H9NO6S
    [4-甲氧基-5-甲基-2-[(2E,4E,6E)-辛-2,4,6-三烯-2-基]四氢吡喃-3-基]2-[[(2R,3S,4S,5S,6S)-3,4,5-三羟基-6-(羟基甲基)四氢吡喃-2-基]氨基]乙酸酯 [4-methoxy-5-methyl-2-[(2E,4E,6E)-octa-2,4,6-trien-2-yl]oxan-3-yl] 2-[[(2R,3S,4S,5S,6S)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]amino]acetate 141363-92-0 C23H37NO9
    [4-甲氧基-3-(2-苯基乙氧基)苯基]甲醇 4-methoxy-3-(2-phenylethoxy)benzyl alcohol 1021126-94-2 C16H18O3
    [4-甲氧基-2-(甲氧基乙氧基甲氧基甲基)]苯氧基乙醛二甲基缩醛 [4-methoxy-2-(methoxyethoxymethoxymethyl)]phenyloxyacetaldehyde dimethyl acetal 817631-25-7 C16H26O7
    [4-甲氧基-2-(3-甲基丁-2-烯基)苯基]十八烷酸酯 2-(3-Methyl-2-butenyl)-4-methoxyphenyl stearate 144705-42-0 C30H50O3
    [4-甲基-环己基]-苯基-酮 <4-Methyl-cyclohexyl>-phenyl-keton 833-37-4 C14H18O
    [4-甲基-6-(1-哌啶基)哒嗪-3-基]水合肼二盐酸盐 hydron;(4-methyl-6-piperidin-1-ylpyridazin-3-yl)hydrazine;dichloride;hydrate —— C10H21Cl2N5O
    [4-甲基-2-(4-(三氟甲基)苯酚)-1,3-噻唑-5-基]甲醇 [4-methyl-2-(4-trifluoromethyl-phenyl)-thiazol-5-yl]-methanol 317318-96-0 C12H10F3NOS
    [4-甲基-2-(3-硝基苯基)-1,3-恶唑烷-4-基]甲醇 2-(m-Nitrophenyl)-4-methyl-4-hydroxymethyloxazolidine 73771-46-7 C11H14N2O4
    [4-甲基-2-(3-硝基苯基)-1,3-噁唑烷-4-基]甲醇 hydron;1-(1-phenylpropyl)piperidine;chloride —— C14H22ClN
    [4-甲基-2-(2-吡嗪)-1,3-噻唑-5-基]甲醇 [4-Methyl-2-(2-pyrazinyl)-1,3-thiazol-5-yl]methanol 352018-94-1 C9H9N3OS
    [4-甲基-2-(15-甲基十六碳基)-4,5-二氢-1,3-恶唑-4-基]甲醇 4-Methyl-2-(15-methylhexadecyl)-2-oxazoline-4-methanol 93841-66-8 C22H43NO2
    [4-甲基-2,5-二氧代-4-（2-苯乙基）咪唑啉-1-基]乙酸 [4-Methyl-2,5-dioxo-4-(2-phenylethyl)imidazolidin-1-yl]acetic acid 956986-31-5 C14H16N2O4
    [4-甲基-1-(6-甲基-5-双环[2.2.1]庚-2-烯基)戊-3-烯基]乙酸酯 4-Methyl-1-(3-methylbicyclo(2.2.1)hept-5-en-2-yl)pent-3-enyl acetate 94201-01-1 C16H24O2
    [4-溴-3-(3,5-二氰基苯氧基)-2-氟苯基]乙酸乙酯 [4-bromo-3-(3,5-dicyanophenoxy)-2-fluorophenyl]acetic acid ethyl ester 1007572-08-8 C18H12BrFN2O3
    [4-溴-2-(羟甲基)苯基]-(4-氯苯基)甲酮 2-hydroxymethyl-4-bromo-4'-chloro-benzophenone 64169-35-3 C14H10BrClO2
    [4-溴-2-(羟甲基)苯基]-(4-氟苯基)甲酮 4-bromo-4'-fluoro-2-(hydroxymethyl)benzophenone 64169-64-8 C14H10BrFO2
    [4-溴-2-(氯甲基)苯氧基]乙酸乙酯 ethyl [4-bromo-2-(chloromethyl)phenoxy]Acetate 13923-56-3 C11H12BrClO3
    [4-氰基-4-(3-甲氧基苯基)十六烷-1-基](5-甲氧基苯乙基)甲基氯化铵 [4-Cyano-4-(3-methoxyphenyl)hexadecyl]-[2-(3-methoxyphenyl)ethyl]-methylazanium;chloride 94313-88-9 C34H53ClN2O2
    [4-氯-5-(1-甲基吡咯烷-2-基)吡啶-3-基](4-甲氧基苯基)甲醇 [4-chloro-5-(1-methylpyrrolidin-2-yl)pyridin-3-yl](4-methoxyphenyl)methanol 919079-41-7 C18H21ClN2O2
    [4-氯-5-(1-甲基吡咯烷-2-基)吡啶-3-基](2-甲氧基苯基)甲醇 [4-chloro-5-(1-methylpyrrolidin-2-yl)pyridin-3-yl](2-methoxyphenyl)methanol 919079-40-6 C18H21ClN2O2
    [4-氯-3-甲氧基-5-(甲氨基)苯基]甲醇 [4-Chloro-3-methoxy-5-(methylamino)phenyl]methanol 64095-11-0 C9H12ClNO2
    [4-氯-3-[[4,5-二氢-5-氧代-1-(2,4,6-三氯苯基)-1H-吡唑-3-基]氨基]苯基]氨基甲酸十六烷基酯 Hexadecyl (4-chloro-3-((4,5-dihydro-5-oxo-1-(2,4,6-trichlorophenyl)-1H-pyrazol-3-yl)amino)phenyl)carbamate 57233-79-1 C32H42Cl4N4O3
    [4-氯-3-(三氟甲氧基)苯基]硼酸 4-chloro-3-(trifluoromethoxy)phenylboronic acid 902757-07-7 C7H5BClF3O3
    [4-氯-3-(三氟甲基)苯基]肼盐酸盐 1-(4-chloro-3-trifluoromethylphenyl)hydrazine hydrochloride 40566-70-9 C7H6ClF3N2*ClH
    [4-氯-3-(三氟甲基)苯基]氨基甲酸苯基酯 phenyl (4-chloro-3-(trifluoromethyl)phenyl)carbamate 871555-75-8 C14H9ClF3NO2