摩熵化学
数据库官网
小程序
打开微信扫一扫
首页 分子通 化学资讯 化学百科 反应查询 关于我们
请输入关键词
中文名称 英文名称 CAS号 化学式 结构式图片
—— 5-tert-Butyl-3-hydroxymethyl-furan-2-carbaldehyde —— C10H14O3
5-tert-Butyl-3-hydroxymethyl-furan-2-carbaldehyde
—— 5-[(E)-2-piperidin-3-ylethenyl]pyrimidine —— C11H15N3
5-[(E)-2-piperidin-3-ylethenyl]pyrimidine
—— (5E)-4-acetyl-5-hydroxyiminohexanenitrile —— C8H12N2O2
(5E)-4-acetyl-5-hydroxyiminohexanenitrile
—— 5-tert-butyl-2-hydroxy-3-methylcyclopent-2-en-1-one —— C10H16O2
5-tert-butyl-2-hydroxy-3-methylcyclopent-2-en-1-one
—— 5-[(1R,5R)-1-bicyclo[3.1.0]hexanyl]-6-methyl-3,4-dihydro-2H-pyran —— C12H18O
5-[(1R,5R)-1-bicyclo[3.1.0]hexanyl]-6-methyl-3,4-dihydro-2H-pyran
—— (+/-)-5-Ethyl-2-exo-methyl-4-methylene-6,8-dioxabicyclo<3.2.1>octane —— C10H16O2
(+/-)-5-Ethyl-2-exo-methyl-4-methylene-6,8-dioxabicyclo<3.2.1>octane
—— 5-(Dideuteriomethyl)-2-methylaniline —— C8H11N
5-(Dideuteriomethyl)-2-methylaniline
—— 5-[4-[(2S,5S,8S,14S,17R)-8-benzyl-5-(1H-indol-3-ylmethyl)-14,17-bis(2-methylpropyl)-3,6,9,12,15,18-hexaoxo-1,4,7,10,13,16-hexazacyclooctadec-2-yl]butanoylamino]-N-[(2R,3R,4R,5S,6R)-3,4-dihydroxy-6-(hydroxymethyl)-5-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]pentanamide —— C57H83N9O18
5-[4-[(2S,5S,8S,14S,17R)-8-benzyl-5-(1H-indol-3-ylmethyl)-14,17-bis(2-methylpropyl)-3,6,9,12,15,18-hexaoxo-1,4,7,10,13,16-hexazacyclooctadec-2-yl]butanoylamino]-N-[(2R,3R,4R,5S,6R)-3,4-dihydroxy-6-(hydroxymethyl)-5-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]pentanamide
—— (5S,6R)-3-[(2E,4S,6S,7S,8Z,10E,12E)-9-bromo-7-[tert-butyl(diphenyl)silyl]oxy-2,4,6,12-tetramethyl-14-triethylsilyloxytetradeca-2,8,10,12-tetraenoyl]-6-[(E)-3-[tert-butyl(dimethyl)silyl]oxy-2-methylprop-1-enyl]-8-[[tert-butyl(diphenyl)silyl]oxymethyl]-4-methoxy-9-methyl-1-oxaspiro[4.5]deca-3,7-dien-2-one —— C78H111BrO8Si4
(5S,6R)-3-[(2E,4S,6S,7S,8Z,10E,12E)-9-bromo-7-[tert-butyl(diphenyl)silyl]oxy-2,4,6,12-tetramethyl-14-triethylsilyloxytetradeca-2,8,10,12-tetraenoyl]-6-[(E)-3-[tert-butyl(dimethyl)silyl]oxy-2-methylprop-1-enyl]-8-[[tert-butyl(diphenyl)silyl]oxymethyl]-4-methoxy-9-methyl-1-oxaspiro[4.5]deca-3,7-dien-2-one
—— 5-[[5-Amino-6-[[5-amino-6-[[4-[2-chloroethyl(methyl)amino]phenyl]methylamino]-6-oxohexyl]amino]-6-oxohexyl]carbamoyl]-2-(3-oxa-23-aza-9-azoniaheptacyclo[17.7.1.15,9.02,17.04,15.023,27.013,28]octacosa-1(27),2(17),4,9(28),13,15,18-heptaen-16-yl)benzoate —— C55H67ClN8O6
5-[[5-Amino-6-[[5-amino-6-[[4-[2-chloroethyl(methyl)amino]phenyl]methylamino]-6-oxohexyl]amino]-6-oxohexyl]carbamoyl]-2-(3-oxa-23-aza-9-azoniaheptacyclo[17.7.1.15,9.02,17.04,15.023,27.013,28]octacosa-1(27),2(17),4,9(28),13,15,18-heptaen-16-yl)benzoate
—— 5-O-[4-[(2S,3R)-1-(4-fluorophenyl)-3-[(3S)-3-(4-fluorophenyl)-3-hydroxypropyl]-4-oxoazetidin-2-yl]phenyl] 1-O-[2-[2-[2-(4-fluorophenyl)-3-phenyl-4-(phenylcarbamoyl)-5-propan-2-ylpyrrol-1-yl]ethyl]-6-oxooxan-4-yl] pentanedioate —— C62H58F3N3O9
5-O-[4-[(2S,3R)-1-(4-fluorophenyl)-3-[(3S)-3-(4-fluorophenyl)-3-hydroxypropyl]-4-oxoazetidin-2-yl]phenyl] 1-O-[2-[2-[2-(4-fluorophenyl)-3-phenyl-4-(phenylcarbamoyl)-5-propan-2-ylpyrrol-1-yl]ethyl]-6-oxooxan-4-yl] pentanedioate
—— 5-methoxy-2-[3-(5-methoxy-1,3,3-trimethylindol-1-ium-2-yl)prop-2-enylidene]-1,3,3-trimethylindole;tetrakis(3,5-dimethylphenyl)boranuide —— C59H69BN2O2
5-methoxy-2-[3-(5-methoxy-1,3,3-trimethylindol-1-ium-2-yl)prop-2-enylidene]-1,3,3-trimethylindole;tetrakis(3,5-dimethylphenyl)boranuide
—— 5-{3-[2-((S)-1-Carboxy-2-{[3-oxo-2-(2-piperidin-4-yl-ethyl)-2,3-dihydro-1H-isoindole-5-carbonyl]-amino}-ethylsulfamoyl)-ethyl]-thioureido}-2-(6-hydroxy-3-oxo-3H-xanthen-9-yl)-benzoic acid —— C42H42N6O11S2
5-{3-[2-((S)-1-Carboxy-2-{[3-oxo-2-(2-piperidin-4-yl-ethyl)-2,3-dihydro-1H-isoindole-5-carbonyl]-amino}-ethylsulfamoyl)-ethyl]-thioureido}-2-(6-hydroxy-3-oxo-3H-xanthen-9-yl)-benzoic acid
—— 5-methoxy-2-[3-(5-methoxy-1,3,3-trimethylindol-1-ium-2-yl)prop-2-enylidene]-1,3,3-trimethylindole;tetrakis(4-methylphenyl)boranuide —— C55H61BN2O2
5-methoxy-2-[3-(5-methoxy-1,3,3-trimethylindol-1-ium-2-yl)prop-2-enylidene]-1,3,3-trimethylindole;tetrakis(4-methylphenyl)boranuide
—— 5-[[3-[6-(1-adamantylmethylcarbamoyl)-3H-benzimidazole-5-carbonyl]-1,2,4,5,6,7-hexahydro-3-benzazonine-2-carbonyl]amino]benzene-1,3-dicarboxylic acid —— C41H43N5O7
5-[[3-[6-(1-adamantylmethylcarbamoyl)-3H-benzimidazole-5-carbonyl]-1,2,4,5,6,7-hexahydro-3-benzazonine-2-carbonyl]amino]benzene-1,3-dicarboxylic acid
—— 5-[[3-(2-Ethylhexoxy)-2-hydroxypropyl]-[2-[[3-(2-ethylhexoxy)-2-hydroxypropyl]-(2,3,4,5-tetrahydroxypentyl)amino]ethyl]amino]pentane-1,2,3,4-tetrol —— C34H72N2O12
5-[[3-(2-Ethylhexoxy)-2-hydroxypropyl]-[2-[[3-(2-ethylhexoxy)-2-hydroxypropyl]-(2,3,4,5-tetrahydroxypentyl)amino]ethyl]amino]pentane-1,2,3,4-tetrol
—— 5-[3-[[5-Carboxy-2-(4,5-dimethyl-1,3-dithiol-2-ylidene)-1,3-dithiol-4-yl]sulfanyl]propylsulfanyl]-2-(4,5-dimethyl-1,3-dithiol-2-ylidene)-1,3-dithiole-4-carboxylic acid —— C21H20O4S10
5-[3-[[5-Carboxy-2-(4,5-dimethyl-1,3-dithiol-2-ylidene)-1,3-dithiol-4-yl]sulfanyl]propylsulfanyl]-2-(4,5-dimethyl-1,3-dithiol-2-ylidene)-1,3-dithiole-4-carboxylic acid
—— 5-[N-(3-{[N'-[3,5-bis(trifluoromethyl)benzyl]-N'-(1-methyl-1H-pyrazol-3-yl)amino]methyl}-5,6,7,8-tetrahydronaphthalen-2-yl)-N-ethylamino]pentanoic acid hydrochloride —— C31H36F6N4O2*ClH
5-[N-(3-{[N'-[3,5-bis(trifluoromethyl)benzyl]-N'-(1-methyl-1H-pyrazol-3-yl)amino]methyl}-5,6,7,8-tetrahydronaphthalen-2-yl)-N-ethylamino]pentanoic acid hydrochloride
—— 5-butyl-N-[(4-chlorophenyl)methyl]-4-[[4-[2-(1,2,3-triaza-4-azanidacyclopenta-2,5-dien-5-yl)phenyl]phenyl]methyl]-1,2,4-triazol-3-amine;trimethylstannanylium —— C30H35ClN8Sn
5-butyl-N-[(4-chlorophenyl)methyl]-4-[[4-[2-(1,2,3-triaza-4-azanidacyclopenta-2,5-dien-5-yl)phenyl]phenyl]methyl]-1,2,4-triazol-3-amine;trimethylstannanylium
—— 5-hydroxy-6-methoxy-2-(4-methoxyphenyl)-4-oxo-4H-chromen-7-yl 6-O-(4-O-acetyl-6-deoxy-alpha-L-mannopyranosyl)-beta-D-glucopyranoside —— C31H36O16
5-hydroxy-6-methoxy-2-(4-methoxyphenyl)-4-oxo-4H-chromen-7-yl 6-O-(4-O-acetyl-6-deoxy-alpha-L-mannopyranosyl)-beta-D-glucopyranoside
—— 5-hydroxy-N-[2-[2-[(5-hydroxy-1-methyl-6-oxopyridine-3-carbonyl)amino]ethyl-[1-[(5-hydroxy-1-methyl-6-oxopyridine-3-carbonyl)amino]propan-2-yl]amino]ethyl]-1-methyl-6-oxopyridine-3-carboxamide —— C28H35N7O9
5-hydroxy-N-[2-[2-[(5-hydroxy-1-methyl-6-oxopyridine-3-carbonyl)amino]ethyl-[1-[(5-hydroxy-1-methyl-6-oxopyridine-3-carbonyl)amino]propan-2-yl]amino]ethyl]-1-methyl-6-oxopyridine-3-carboxamide
—— {5-Butyl-4-[2'-(1H-tetrazol-5-yl)-biphenyl-4-ylmethyl]-4H-[1,2,4]triazol-3-yl}-(4-chloro-benzyl)-amine —— C27H27ClN8
{5-Butyl-4-[2'-(1H-tetrazol-5-yl)-biphenyl-4-ylmethyl]-4H-[1,2,4]triazol-3-yl}-(4-chloro-benzyl)-amine
—— 5,5-Dimethyl-2-oxido-2-sulfanylidene-1,3,2lambda5-dioxaphosphinane;(5,5-dimethyl-2-sulfanylidene-1,3,2lambda5-dioxaphosphinan-2-yl)oxy-triphenylphosphanium —— C28H35O6P3S2
5,5-Dimethyl-2-oxido-2-sulfanylidene-1,3,2lambda5-dioxaphosphinane;(5,5-dimethyl-2-sulfanylidene-1,3,2lambda5-dioxaphosphinan-2-yl)oxy-triphenylphosphanium
—— 5-bromo-6-(2,3-dimethoxyanilino)-N-[3-[(3R)-1-methylpyrrolidin-3-yl]oxy-4-(trifluoromethyl)phenyl]pyridine-3-sulfonamide —— C25H26BrF3N4O5S
5-bromo-6-(2,3-dimethoxyanilino)-N-[3-[(3R)-1-methylpyrrolidin-3-yl]oxy-4-(trifluoromethyl)phenyl]pyridine-3-sulfonamide
—— 5-[[3-[[[3,5-Bis(trifluoromethyl)phenyl]methyl-(1-methylpyrazol-3-yl)amino]methyl]-5,6,7,8-tetrahydronaphthalen-2-yl]-ethylamino]pentanoic acid —— C31H36F6N4O2
5-[[3-[[[3,5-Bis(trifluoromethyl)phenyl]methyl-(1-methylpyrazol-3-yl)amino]methyl]-5,6,7,8-tetrahydronaphthalen-2-yl]-ethylamino]pentanoic acid
—— (5S,8S,10R,13S,14S,16R,17S)-17-[2-[4-(2,6-dipyrrolidin-1-ylpyrimidin-4-yl)piperazin-1-yl]acetyl]-10,13,16-trimethyl-4,5,6,7,8,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-3-one —— C38H54N6O2
(5S,8S,10R,13S,14S,16R,17S)-17-[2-[4-(2,6-dipyrrolidin-1-ylpyrimidin-4-yl)piperazin-1-yl]acetyl]-10,13,16-trimethyl-4,5,6,7,8,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-3-one
—— 5,5-bis(4-fluorophenyl)-3-(3-{4-(4-fluorophenyl)-3-[(4-methyl-1-piperazinyl)carbonyl]-1-piperidinyl}propyl)-2-methyl-3,5-dihydro-4H-imidazol-4-one 721949-26-4 C36H40F3N5O2
5,5-bis(4-fluorophenyl)-3-(3-{4-(4-fluorophenyl)-3-[(4-methyl-1-piperazinyl)carbonyl]-1-piperidinyl}propyl)-2-methyl-3,5-dihydro-4H-imidazol-4-one
—— [5-(3,5-Dichlorophenyl)sulfanyl-1-[[3-(diethoxyphosphorylmethoxy)phenyl]methyl]-4-propan-2-ylimidazol-2-yl]methyl carbamate —— C26H32Cl2N3O6PS
[5-(3,5-Dichlorophenyl)sulfanyl-1-[[3-(diethoxyphosphorylmethoxy)phenyl]methyl]-4-propan-2-ylimidazol-2-yl]methyl carbamate
—— [5-Carbamoyl-9-(3-fluorophenyl)-7-hydroxy-2-methyl-8-(quinoxaline-2-carbonylamino)nonan-2-yl]oxycarbonyloxymethyl 2-aminoacetate —— C30H36FN5O8
[5-Carbamoyl-9-(3-fluorophenyl)-7-hydroxy-2-methyl-8-(quinoxaline-2-carbonylamino)nonan-2-yl]oxycarbonyloxymethyl 2-aminoacetate
—— [5-[Bis(4-chlorophenyl)-hydroxymethyl]-2,2-dimethyl-1,3-dioxolan-4-yl]-bis(4-chlorophenyl)methanol —— C31H26Cl4O4
[5-[Bis(4-chlorophenyl)-hydroxymethyl]-2,2-dimethyl-1,3-dioxolan-4-yl]-bis(4-chlorophenyl)methanol
—— 5-{[Bis(cyclopropylmethyl)amino]methyl}-2-({2-[(2-carboxyphenyl)amino]-5-(trifluoromethyl)phenyl}amino)benzoic acid —— C30H30F3N3O4
5-{[Bis(cyclopropylmethyl)amino]methyl}-2-({2-[(2-carboxyphenyl)amino]-5-(trifluoromethyl)phenyl}amino)benzoic acid
—— 5-(2-Bromo-benzyl)-2-butyl-3-[2'-(1H-tetrazol-5-yl)-biphenyl-4-ylmethyl]-3,5-dihydro-imidazo[4,5-c]pyridin-4-one —— C31H28BrN7O
5-(2-Bromo-benzyl)-2-butyl-3-[2'-(1H-tetrazol-5-yl)-biphenyl-4-ylmethyl]-3,5-dihydro-imidazo[4,5-c]pyridin-4-one
—— 5-(2,4-dibromo-5-tert-butyl-phenoxy)-furan-2-carboxylic acid N'-(1,3,4-trimethyl-1H-pyrazol [3,4-b] pyridin-6-yl)-hydrazide 637013-00-4 C24H25Br2N5O3
5-(2,4-dibromo-5-tert-butyl-phenoxy)-furan-2-carboxylic acid N'-(1,3,4-trimethyl-1H-pyrazol [3,4-b] pyridin-6-yl)-hydrazide
—— 5-[N-(6-{[N'-(3-cyano-5-trifluoromethylbenzyl)-N'-(3-methyl-isoxazol-5-yl)amino]methyl}indan-5-yl)-N-ethylamino]pentanoic acid hydrochloride —— C30H33F3N4O3*ClH
5-[N-(6-{[N'-(3-cyano-5-trifluoromethylbenzyl)-N'-(3-methyl-isoxazol-5-yl)amino]methyl}indan-5-yl)-N-ethylamino]pentanoic acid hydrochloride
—— 5-(2,6-dichlorophenyl)sulfanyl-N-[3-[(3R)-1-methylpyrrolidin-3-yl]oxy-4-(trifluoromethyl)phenyl]thiophene-2-sulfonamide —— C22H19Cl2F3N2O3S3
5-(2,6-dichlorophenyl)sulfanyl-N-[3-[(3R)-1-methylpyrrolidin-3-yl]oxy-4-(trifluoromethyl)phenyl]thiophene-2-sulfonamide
—— 5-{[(1-acetyl-4-piperidinyl)-carbonyl]-amino}-5"-chloro-2"-[(phenylmethyl)-oxy]-1,1';2',1"-terphenyl-3-carboxylic acid 690260-06-1 C34H31ClN2O5
5-{[(1-acetyl-4-piperidinyl)-carbonyl]-amino}-5"-chloro-2"-[(phenylmethyl)-oxy]-1,1';2',1"-terphenyl-3-carboxylic acid
—— 5"-chloro-2"-[(phenylmethyl)-oxy]-5-({[(phenylmethyl)-oxy]-acetyl}-amino)-1,1';2',1"-terphenyl-3-carboxylic acid 690260-05-0 C35H28ClNO5
5"-chloro-2"-[(phenylmethyl)-oxy]-5-({[(phenylmethyl)-oxy]-acetyl}-amino)-1,1';2',1"-terphenyl-3-carboxylic acid
—— 5,5-Bis(4-fluorophenyl)-2-methyl-3-[[1-(2-phenylethyl)azetidin-3-yl]methyl]imidazol-4-one —— C28H27F2N3O
5,5-Bis(4-fluorophenyl)-2-methyl-3-[[1-(2-phenylethyl)azetidin-3-yl]methyl]imidazol-4-one
—— 5,5-bis(4-fluorophenyl)-2-methyl-3-{[1-(2-phenylethyl)-3-azetidinyl]methyl}-3,5-dihydro-4H-imidazol-4-one trifluoroacetate 721949-61-7 C2HF3O2*C28H27F2N3O
5,5-bis(4-fluorophenyl)-2-methyl-3-{[1-(2-phenylethyl)-3-azetidinyl]methyl}-3,5-dihydro-4H-imidazol-4-one trifluoroacetate
—— 5,10,15,20-tetrakis(1H-pyrrol-2-yl)-21,22-dihydroporphyrin —— C36H26N8
5,10,15,20-tetrakis(1H-pyrrol-2-yl)-21,22-dihydroporphyrin
—— (5R)-5-(hexadecoxymethyl)-3-[4-(1,3-thiazol-3-ium-3-yl)butyl]-1,3-oxazolidin-2-one;bromide —— C27H49BrN2O3S
(5R)-5-(hexadecoxymethyl)-3-[4-(1,3-thiazol-3-ium-3-yl)butyl]-1,3-oxazolidin-2-one;bromide
—— 5-(4-{2-[5-bromo-2-(2,4,6-trifluoro-benzyloxy)-phenyl]-5-methyl-pyrrol-1-yl}-benzyl)-1H-tetrazole 632625-34-4 C26H19BrF3N5O
5-(4-{2-[5-bromo-2-(2,4,6-trifluoro-benzyloxy)-phenyl]-5-methyl-pyrrol-1-yl}-benzyl)-1H-tetrazole
—— 5"-chloro-5-[(phenylacetyl)-amino]-2"-[(phenylmethyl)-oxy]-1,1';2',1"-terphenyl-3-carboxylic acid 690260-07-2 C34H26ClNO4
5"-chloro-5-[(phenylacetyl)-amino]-2"-[(phenylmethyl)-oxy]-1,1';2',1"-terphenyl-3-carboxylic acid
—— 5-Methoxycarbonyl-2,4-dimethylcyclohexa-1,4-diene-1-carboxylic acid —— C11H14O4
5-Methoxycarbonyl-2,4-dimethylcyclohexa-1,4-diene-1-carboxylic acid
—— 5-chloro-4-[3-(hydroxymethyl)phenyl]-N-[3-[(3R)-1-methylpyrrolidin-3-yl]oxy-4-(trifluoromethyl)phenyl]thiophene-2-sulfonamide —— C23H22ClF3N2O4S2
5-chloro-4-[3-(hydroxymethyl)phenyl]-N-[3-[(3R)-1-methylpyrrolidin-3-yl]oxy-4-(trifluoromethyl)phenyl]thiophene-2-sulfonamide
—— 5-[4-[(2-cyanophenyl)methoxy]phenyl]sulfonyl-N-hydroxy-3-oxo-2-phenyl-1,4,6,7-tetrahydropyrazolo[4,3-c]pyridine-4-carboxamide —— C27H23N5O6S
5-[4-[(2-cyanophenyl)methoxy]phenyl]sulfonyl-N-hydroxy-3-oxo-2-phenyl-1,4,6,7-tetrahydropyrazolo[4,3-c]pyridine-4-carboxamide
—— (5E)-5-benzylidene-2-[2-[(5E)-5-benzylidene-6-oxo-[1,3]thiazolo[3,2-b][1,2,4]triazol-2-yl]phenyl]-[1,3]thiazolo[3,2-b][1,2,4]triazol-6-one —— C28H16N6O2S2
(5E)-5-benzylidene-2-[2-[(5E)-5-benzylidene-6-oxo-[1,3]thiazolo[3,2-b][1,2,4]triazol-2-yl]phenyl]-[1,3]thiazolo[3,2-b][1,2,4]triazol-6-one
—— 5-bromo-3-[2-[(4-methoxyphenyl)sulfonylamino]ethylsulfamoyl]-1H-indole-2-carboxamide —— C18H19BrN4O6S2
5-bromo-3-[2-[(4-methoxyphenyl)sulfonylamino]ethylsulfamoyl]-1H-indole-2-carboxamide
—— (5S,5aR,8aR,9R)-5-[[(2S,4aR,6R,7R,8R,8aS)-7,8-dihydroxy-2-methyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-6-yl]oxy]-9-(3,4-dihydroxyphenyl)-5a,6,8a,9-tetrahydro-5H-[2]benzofuro[6,5-f][1,3]benzodioxol-8-one —— C27H28O12
(5S,5aR,8aR,9R)-5-[[(2S,4aR,6R,7R,8R,8aS)-7,8-dihydroxy-2-methyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-6-yl]oxy]-9-(3,4-dihydroxyphenyl)-5a,6,8a,9-tetrahydro-5H-[2]benzofuro[6,5-f][1,3]benzodioxol-8-one
—— [5-Carbamoyl-9-(3-fluorophenyl)-7-hydroxy-2-methyl-8-(quinoxaline-2-carbonylamino)nonan-2-yl] 2-aminoacetate —— C28H34FN5O5
[5-Carbamoyl-9-(3-fluorophenyl)-7-hydroxy-2-methyl-8-(quinoxaline-2-carbonylamino)nonan-2-yl] 2-aminoacetate