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  •       乐研品牌隶属于上海皓鸿生物医药科技有限公司,专注服务于医药研发领域,拥有享誉业内的自主研发技术能力,秉承“研发实力打造高品质”的理念进行产品的开发,始终致力于为国内外化学和医药研发领域用户提供最优质的产品和最专业的服务,乐研开发和打造的产品系列主要包括:分子砌块、合成试剂、医药中间体和相关的仪器耗材。能满足用户从mg级到kg级、从标准化到定制化的实验室综合需求。 乐研秉承“攻坚科研,冲破壁垒”的态度,依托多年来在新药开发、质量管控等方面的纯熟经验,致力在全球范围内构建一个连接医药研发供需两端的电商服务平台。在乐研商城,科研工作者可以通过多种途径检索目标化合物并实现自助化快速下单,还可以与专业客服人员进行实时沟通,得到客服团队的快速响应。 乐研立志成为促进医药研发领域的有效催化剂,帮您告别繁琐选购,助您加速研发进程。
英文名称 中文名称 CAS号 操作
Benzo[1′′,2′′:4,5;4′′,5′′:4′,5′]bissilolo[3,2-b:3′,2′-b′]dithiophene, 4,4,9,9-tetrahexyl-4,9-dihydro-2,7-bis(trimethylstannyl)- 苯并[1′′,2′′:4,5;4′′,5′′:4′,5′]双硅氧烷[3,2-b:3′,2'-b′]二噻吩,4,4,9-四己基-4,9-二氢-2,7-双(三甲基锡基)- 1569453-45-7 详细
2',5'-Bis((ethylthio)methyl)-[1,1':4',1''-terphenyl]-4,4''-diamine 2',5'-双((乙硫基)甲基)-[1,1':4',1''-三联苯]-4,4''-二胺 2231404-37-6 详细
N,N-Diethyl-2-(2-methoxy-5-(methylsulfonyl)benzamido)ethanamine oxide (Tiapride Impurity) N,N-二乙基-2-(2-甲氧基-5-(甲基磺酰基)苯甲酰胺基)氧化乙胺 (硫必利杂质) 63484-11-7 详细
9,10-Dihydro-9,10-[1,2]benzenoanthracene-2,7,14-triamine 9,10-二氢-9,10-[1,2]苯并蒽-2,7,14-三胺 58519-05-4 详细
Methyl 1-chloro-4-hydroxyisoquinoline-3-carboxylate 1-氯-4-羟基异喹啉-3-甲酸甲酯 223388-20-3 详细
(2R,3R,4R,5R)-6-Nitrohexane-1,2,3,4,5-pentaol (2R,3R,4R,5R)-6-硝基己烷-1,2,3,4,5-戊醇 14199-83-8 详细
2,5-Di(2H-tetrazol-5-yl)terephthalic acid 2,5-二(2H-四唑-5-基)对苯二甲酸 2417761-51-2 详细
5-(4-Carboxyphenyl)picolinic acid 5-(4-羧基苯基)吡啶甲酸 1261898-79-6 详细
5,5',5''-(4,4',4''-(Benzene-1,3,5-triyl)tris(1H-1,2,3-triazole-4,1-diyl))triisophthalic acid 5,5',5''-(4,4',4''-(苯-1,3,5-三基)三(1H-1,2,3-三唑-4,1-二基))三间苯二甲酸 1334547-47-5 详细
1,1'-Biphenyl]-2,3',5,5'-tetracarboxylic acid 1,1'-联苯]-2,3',5,5'-四羧酸 1515946-99-2 详细
2,2'-Bipyridine]-3,3',6,6'-tetracarboxylic acid 2,2'-联吡啶]-3,3',6,6'-四羧酸 863000-84-4 详细
1,1''-(1,4-Phenylenebis(methylene))bis(([4,4'-bipyridin]-1-ium)) 1,1''-(1,4-亚苯基双(亚甲基))双(([4,4'-联吡啶])) 108861-19-4 详细
3-Sulfophthalic acid 3-磺基邻苯二甲酸 67892-43-7 详细
4,4′-(7,8-Dihydro-21H,23H-porphine-5,15-diyl)bis[benzoic acid 4,4'-(7,8-二氢-21H,23H-卟啉-5,15-二基)双[苯甲酸 1797416-17-1 详细
Benzo[c][1,2,5]thiadiazole-4,7-diamine 苯并[c][1,2,5]噻二唑-4,7-二胺 19951-39-4 详细
Ethyl 1-(piperidine-4-carbonyl)piperidine-4-carboxylate (Avatrombopag Impurity) 1-(哌啶-4-羰基)哌啶-4-羧酸乙酯 (阿伐曲泊帕杂质) 901314-75-8 详细
2',5'-Bis((4-aminophenyl)ethynyl)-[1,1':4',1''-terphenyl]-4,4''-dicarbaldehyde 2',5'-双((4-氨基苯基)乙炔基)-[1,1':4',1''-三联苯]-4,4''-二甲醛 2375652-87-0 详细
BT2F-2Th812Sn 2,1,3-Benzothiadiazole, 5,6-difluoro-4,7-bis[4-(2-octyldodecyl)-5-(trimethylstannyl)-2-thienyl]- 2376104-24-2 详细
(Benzene-1,2,4,5-tetrayltetrakis(methylene))tetraphosphonic acid (苯-1,2,4,5-四基四(亚甲基))四膦酸 69303-28-2 详细
2-(Chloromethyl)-5-(methylsulfonyl)pyridine 2-(氯甲基)-5-(甲磺酰基)吡啶 1196151-88-8 详细
4-Chloro-5-nitro-2-(propylthio)pyrimidine (Ticagrelor Impurity) 4-氯-5-硝基-2-(丙基硫)嘧啶(替卡格雷杂质) 2518331-26-3 详细
(R,Z)-N-(3-Chloroallyl)-2,3-dihydro-1H-inden-1-amine hydrochloride (Rasagiline Impurity) (R,Z)-N-(3-氯烯丙基)-2,3-二氢-1H-茚-1-胺盐酸盐 (雷沙吉兰杂质) 1175018-80-0 详细
ThCl-2Br Thiophene, 2,5-dibromo-3-chloro- 32431-91-7 详细
DTFCO8-2Br 1-(4,6-Dibromo-3-fluorothieno[3,4-b]thiophen-2-yl)nonan-1-one 1309764-86-0 详细
2-(4-((2-Hydroxycyclopentyl)methyl)phenyl)propanoic acid (Loxoprofen Impurity) 2-(4-((2-羟基环戊基)甲基)苯基)丙酸 (洛索洛芬杂质) 83599-40-0 详细
DTCOO26-CHO-Br PM275 1848245-23-7 详细
Th26-CHO-B 2-Thiophenecarboxaldehyde, 4-(2-ethylhexyl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)- 2344786-93-0 详细
2TOMe-2Sn PM210 1248460-50-5 详细
(8R,9S,10R,13S,14S,17R)-17-Acetyl-10,13-dimethyl-3-oxo-2,3,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl acetate (Chlormadinone Acetate Impurity) (8R,9S,10R,13S,14S,17R)-17-乙酰基-10,13-二甲基-3-氧代-2,3,8,9,10,11,12,13,14,15,16,17-十二氢-1H-环戊基[a]菲-17-乙酸酯 (醋酸氯马地酮杂质) 425-51-4 详细
2-((8S,13S,14S,17R)-17-Hydroxy-13-methyl-1,2,4,6,7,8,12,13,14,15,16,17-dodecahydrospiro[cyclopenta[a]phenanthrene-3,2'-[1,3]dioxolan]-17-yl)acetonitrile (Dienogest Impurity) 2-(8S,13S,14S,17R)-17-羟基-13-甲基-1,2,4,6,7,8,12,13,14,15,16,17-十二氢螺环[a]菲-3,2'-[1,3]二氧环己烷]-17-基)乙腈 (地诺孕素杂质) 190662-30-7 详细
PFDP 聚(9,9-N-二己基-2,7-芴-ALT-9-苯基-3,6-咔唑) 856893-75-9 详细
TPD1014-2Br 1,3-Dibromo-5-(2-decyltetradecyl)-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione 1640286-62-9 详细
3T8-CHO 3,3''-二辛基-[2,2': 5',2''-三噻吩]-5-甲醛 1342311-47-0 详细
1-Bromo-4-(2-butyloctyl)benzene 1-溴-4-(2-丁基)苯 2243732-54-7 详细
2-((8R,9S,13S,14S,17R)-3,17-Dihydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl)acetonitrile (Dienogest Impurity) 2-(8R,9S,13S,14S,17R)-3,17-二羟基-13-甲基-7,8,9,11,12,13,14,15,16,17-十氢-6H-环戊烷[a]菲-17-基)乙腈 (地诺孕素杂质) 16669-06-0 详细
(8R,9S,13S,14S,16S,17S)-13-Methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene-3,16,17-triol (Estriol Impurity) (8R,9S,13S,14S,16S,17S)-13-甲基-7,8,9,11,12,13,14,15,16,17-十氢-6H-环戊基[a]菲-3,16,17-三醇 (雌三醇杂质) 793-89-5 详细
1,1-Dichloro-3,3-dimethylbutane 1,1-二氯-3,3-二甲基丁烷 6130-96-7 详细
1-(Piperidin-1-yl)propan-2-ol 1-(哌啶-1-基)丙-2-醇 934-90-7 详细
4-(6-Carboxy-9-fluoro-3-methyl-7-oxo-3,7-dihydro-2H-[1,3,4]oxadiazino[6,5,4-ij]quinolin-10-yl)-1-methylpiperazine 1-oxide (Marbofloxacin Impurity) 4-(6-羧基-9-氟-3-甲基-7-氧-3,7-二氢-2H-[1,3,4]恶二嗪基[6,5,4-ij]喹啉-10-基)-1-甲基哌嗪1-氧化物 (马波沙星杂质) 194023-72-8 详细
Tert-butyl 1-phenyl-1,4,6,7-tetrahydro-5H-pyrazolo[4,3-c]pyridine-5-carboxylate 1-苯基-1,4,6,7-四氢-5H-吡唑并[4,3-c]吡啶-5-羧酸叔丁酯 1075729-08-6 详细
(R)-2-((S)-2-(((S)-1-Ethoxy-1-oxo-4-phenylbutan-2-yl)amino)propanoyl)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid hydrochloride (Quinapril Impurity) (R) -2-(S)-2-(S)-1-乙氧基-1-氧代-4-苯基丁烷-2-基)氨基)丙酰基)-1,2,3,4-四氢异喹啉-3-羧酸盐酸盐 (喹那普利杂质) 103775-06-0 详细
Thiazol-5-ylmethyl ((2S,3S,5S)-5-((S)-2-(3,3-dimethylureido)-3-methylbutanamido)-3-hydroxy-1,6-diphenylhexan-2-yl)carbamate (Ritonavir Impurity) 噻唑-5-基甲基 ((2S,3S,5S)-5-((S)-2-(3,3-二甲基脲基)-3-甲基丁酰胺基)-3-羟基-1,6-二苯基己基-2-基) 氨基甲酸酯 (利托那韦杂质) 959351-57-6 详细
1,2-Bis(4-(2-((2,4-dimethylphenyl)thio)phenyl)piperazin-1-yl)ethanone (Vortioxetine Impurity) 1,2-双(4-(2-((2,4-二甲基苯基)硫代)苯基)哌嗪-1-基)乙酮 (沃替西汀杂质) 2476761-84-7 详细
5,5'-Di([1,1'-biphenyl]-4-yl)-2,2'-bithiophene 5,5'-二([1,1'-联苯]-4-基)-2,2'-二硫代苯 175850-28-9 详细
2-(Diphenylamino)pyrimidine-5-carboxylic acid 2-(二苯氨基)嘧啶-5-羧酸 1316216-06-4 详细
(4-Methylenepiperidin-1-yl)(phenyl)methanone (Efinaconazole Impurity) (4-亚甲基哌啶-1-基)(苯基)甲酮 (艾氟康唑杂质) 188904-84-9 详细
2-(1-(2-Aminoethyl)cyclohexyl)acetic acid (Gabapentin Impurity) 2-(1-(2-氨基乙基)环己基)乙酸 (加巴喷丁杂质) 1500558-49-5 详细
(2S,3aS,7aS)-1-((2S)-2-((Z)-3-Cyclohexyl-2-(cyclohexylimino)-4-oxo-5-propylimidazolidin-1-yl)propanoyl)octahydro-1H-indole-2-carboxylic acid (Perindopril Impurity) (2S,3aS,7aS)-1-((2S)-2-((Z)-3-环己基-2-(环己基亚氨基)-4-氧代-5-丙基咪唑啉-1-基)丙酰基)八氢-1H- 吲哚-2-羧酸 (培哚普利杂质) 353777-64-7 详细
1-(2-(2,4-Difluorophenyl)-2-hydroxy-3-(1H-1,2,4-triazol-1-yl)propyl)-1H-1,2,4-triazole 4-oxide (Efinaconazole Impurity) 1-(2-(2,4-二氟苯基)-2-羟基-3-(1H-1,2,4-三唑-1-基)丙基)-1H-1,2,4-三唑4-氧化物 (艾氟康唑杂质) 1997296-62-4 详细
(3S,5aS,9aS,10aS)-3-Methyldecahydropyrazino[1,2-a]indole-1,4-dione (Perindopril Impurity) (3S,5aS,9aS,10aS)-3-甲基十氢吡嗪[1,2-a]吲哚-1,4-二酮 (培哚普利杂质) 2165676-00-4 详细
1-Cyclopropyl-8-ethoxy-6-fluoro-7-((4aS,7aS)-hexahydro-1H-pyrrolo[3,4-b]pyridin-6(2H)-yl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid hydrochloride (Moxifloxacin Impurity) 1-环丙基-8-乙氧基-6-氟-7-((4aS,7aS)-六氢-1H-吡咯并[3,4-b]吡啶-6(2H)-基)-4-氧代-1,4 -二氢喹啉-3-羧酸盐酸盐 (莫西沙星杂质) 2252446-70-9 详细
2,7-Dibromo-9,9-di-p-tolyl-9H-fluorene 2,7-二溴-9,9-二对甲苯基-9H-芴 357645-37-5 详细
(R)-N-(1-(Naphthalen-1-yl)ethyl)-3-phenylpropan-1-amine hydrochloride (Cinacalcet Impurity) (R)-N-(1-(萘-1-基)乙基)-3-苯基丙-1-胺盐酸盐 (西那卡塞杂质) 938177-81-2 详细
1-(Benzo[d][1,3]dioxol-5-yl)thiourea 1-(3,4-亚甲基二氧苯基)-2-硫脲 65069-55-8 详细
2-(3-((1-Ethoxy-1-oxo-4-phenylbutan-2-yl)amino)-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b]azepin-1-yl)acetic acid (Benazepril Impurity) 2-(3-((1-乙氧基-1-氧代-4-苯基丁烷-2-基)氨基)-2-氧代-2,3,4,5-四氢-1H-苯并[b]氮杂-1- 基)乙酸 (苯那普利杂质) 98626-50-7 详细
7-(3-(Trifluoromethyl)phenyl)pyrazolo[1,5-a]pyrimidine-3-carboxamide 7-(3-(三氟甲基)苯基)吡唑并[1,5-a]嘧啶-3-甲酰胺 115930-92-2 详细
(1,4-Dioxane-2,5-diyl)dimethanol (1,4-二噁烷-2,5-二基)二甲醇 14236-12-5 详细
(3R,4S,5S,6R,7R,9R,11S,12R,13S,14R)-6-(((2S,3R,4S,6R)-4-(Dimethylamino)-3-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-14-ethyl-12,13-dihydroxy-4-(((2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yl)oxy)-7-methoxy-10-(methoxyimino)-3,5,7,9,11,13-hexamethyloxacyclotetradecan-2-one (Clarithromycin Impurity) (3R,4S,5S,6R,7R,9R,11S,12R,13S,14R)-6-(((2S,3R,4S,6R)-4-(二甲氨基)-3-羟基-6- 甲基四氢-2H-吡喃-2-基)氧基)-14-乙基-12,13-二羟基-4-(((2R,4R,5S,6S)-5-羟基-4-甲氧基-4,6-二甲基四氢 -2H-吡喃-2-基)氧基)-7-甲氧基-10-(甲氧基亚氨基)-3,5,7,9,11,13-六甲基氧杂环十四烷-2-酮 (克拉霉素杂质) 107216-09-1 详细
1-(4-Chloro-2-methylphenyl)thiourea 1-(4-氯-2-甲基苯基)-2-硫脲 63980-71-2 详细
DPPBr6-2Br 2,5‐bis(6‐ broMohexyl)‐3,6‐bis(5‐ broMothiophen‐2‐ yl)pyrrolo[3,4‐c]pyrrole‐ 1,4(2H,5H)‐dione 1799951-38-4 详细
2-Acetylmalononitrile 2-乙酰丙二腈 1187-11-7 详细
2-(2,4-Difluorophenyl)propane-1,2,3-triol (Efinaconazole Impurity) 2-(2,4-二氟苯基)丙烷-1,2,3-三醇 (艾氟康唑杂质) 173837-65-5 详细
N′-(1,1-Dimethylethyl)-N,N-dimethylmethanimidamide N′-(1,1-二甲基乙基)-N,N-二甲基甲酰胺 23314-06-9 详细
(S)-Fmoc-α-Me-Trp-OH 2244235-26-3 详细
Fmoc-D-Ala(tetrahydropyran-4-yl)-OH 1879080-16-6 详细
Fmoc-2-amino-5-phenyl(2,5-Difluoro)-L-pentanoic acid Fmoc-2-氨基-5-苯基(2,5-二氟)-L-戊酸 2350817-95-5 详细
Fmoc-(S)-2-amino-3-(2-oxopyrrolidin-1-yl)propanoic acid Fmoc-(S)-2-氨基-3-(2-氧代吡咯啉-1-基)丙酸 2350069-82-6 详细
(R)-Fmoc-2-Amino-5-(2,4-dichlorophenyl)pentanoic acid (R)-Fmoc-2-氨基-5-(2,4-二氯苯基)戊酸 2349593-81-1 详细
(S)-Fmoc-2-amino -5-(3,5-difluorophenyl)pentanoic acid (S)-Fmoc-2-氨基-5-(3,5-二氟苯基)戊酸 2349727-63-3 详细
Fmoc-2-amino-5-phenyl(2,3-Difluoro)-L-pentanoic acid Fmoc-2-氨基-5-苯基(2,3-二氟)-L-戊酸 2349313-65-9 详细
Fmoc-Ser(cyclopentyl)-OH L-Serine, O-cyclopentyl-N-[(9H-fluoren-9-ylmethoxy)carbonyl]- 2382243-79-8 详细
Fmoc-5-oxo-5-(piperidin-1-yl)-L-Norvaline Fmoc-5-氧代-5-(哌啶-1-基)-L-正缬氨酸 2559759-55-4 详细
Fmoc-2-amino-5-phenyl(3,4-Difluoro)-L-pentanoic acid Fmoc-2-氨基-5-苯基(3,4-二氟)-L-戊酸 2350133-60-5 详细
(S)-Boc-2-amino-3,3-dimethyl-pent-4-enoicacid (S)-Boc-2-氨基-3,3-二甲基-4-戊烯酸 676629-90-6 详细
4-Bromo-7-chloro-1H-pyrrolo[3,2-c]pyridine-3-carbaldehyde 4-溴-7-氯-1H-吡咯并[3,2-c]吡啶-3-甲醛 1000341-99-0 详细
1,4-Di-tert-butoxy-2,3,5,6-tetrafluorobenzene 1,4-二叔丁氧基-2,3,5,6-四氟苯 121088-09-3 详细
Fmoc-3,5- Dimethyl-L-Tyrosine Fmoc-3,5-二甲基-L-酪氨酸 369401-19-4 详细
Boc-3,5-Dimethyl-L-Tyrosine Boc-3,5-二甲基-L-酪氨酸 1212941-74-6 详细
5-Bromo-4,4-dimethyl-1,2,3,4-tetrahydroisoquinoline 5-溴-4,4-二甲基-1,2,3,4-四氢异喹啉 1203684-57-4 详细
(8S,9R,10S,11S,13S,14S,16S,17R)-9,11-Dichloro-10,13,16-trimethyl-3-oxo-17-(2-(propionyloxy)acetyl)-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate (Beclometasone Dipropionate Impurity) (8S,9R,10S,11S,13S,14S,16S,17R)-9,11-二氯-10,13,16-三甲基-3-氧代-17-(2-(丙酰氧基)乙酰基)-6,7,8,9,10,11,12,13,14,15,16,17-十二氢-3H-环戊酸[a]菲-17-基丙酸盐 (二丙酸倍氯米松杂质) 14527-61-8 详细
Quinoxaline-2,3(1H,4H)-dione 喹喔啉-2,3(1H,4H)-二酮 6287-20-3 详细
2-Bromo-1-(3-fluoropyridin-2-yl)ethan-1-one 2-溴-1-(3-氟吡啶-2-基)乙-1-酮 1044270-51-0 详细
2-Nitro-1-(oxiran-2-ylmethyl)-1H-imidazole 2-硝基-1-(环氧乙烷-2-甲基)-1H-咪唑 13551-90-1 详细
3,3'-Bithiophene]-5-carbaldehyde 3,3'-联噻吩]-5-甲醛 137320-59-3 详细
(S)-3-amino-1-chloro-4-methylpentan-2-one hydrochloride (S)-3-胺基-1-氯-4-甲基戊烷-2-酮盐酸盐 107831-79-8 详细
2-Iodooctane 2-碘代十六烷 557-36-8 详细
(4-Fluorophenyl)(2-(piperazin-1-yl)pyrimidin-5-yl)methanone (4-氟苯基)(2-(哌嗪-1-基)嘧啶-5-基)甲酮 1703794-75-5 详细
Tributyl(5′′-hexyl[2,2′:5′,2′′-terthiophen]-5-yl)stannane 三丁基(5''-己基-[2,2':5',2''-对噻吩]-5-基)锡烷 211737-41-6 详细
2,6-Dibromo-4-propylaniline 2,6-二溴-4-丙基苯胺 10546-64-2 详细
(R)-1-(furan-2-yl)ethan-1-amine (R)-1-(呋喃-2-基)乙-1-胺 132523-44-5 详细
((2R,4S)-2-((1H-Imidazol-1-yl)methyl)-2-(2,4-dichlorophenyl)-1,3-dioxolan-4-yl)methanol (Ketoconazole Impurity) ((2R,4S)-2-((1H-咪唑-1-基)甲基)-2-(2,4-二氯苯基)-1,3-二氧戊环-4-基)甲醇 (酮康唑杂质) 170210-42-1 详细
L-serylglycylglycine L-丝氨酰甘氨酸 2543-40-0 详细
1,1,1,2,2,3,3,4,4,5,5,6,6,7,7-Pentadecafluoro-9-iododecane 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7-十五氟-9-碘癸烷 25291-12-7 详细
7-Chloroheptanenitrile 7-氯庚腈 22819-91-6 详细
1,3-Dibromo-3-methylbutane 1,3-二溴-3-甲基丁烷 24443-15-0 详细
1,1,1,2,2,3,3,4,4-Nonafluoro-5-iodopentane 1,1,1,2,2,3,3,4,4-九氟-5-碘戊烷 2253-14-7 详细
1-Cyano-1-phenyl-2 2 2-trifluoroethanol& 1-氰基-1-苯基-2,2,2-三氟乙醇 20445-04-9 详细
(R)-2-hydroxypropyl methanesulfonate (R)-2-羟丙基甲磺酸盐 262423-81-4 详细
(3-(Pyrazin-2-yl)-1,2,4-oxadiazol-5-yl)methanamine (3-(吡嗪-2-基)-1,2,4-噁二唑-5-基)甲胺 1157834-49-5 详细
4-(Benzoyloxy)benzoic acid 4-(苯甲酰氧基)苯甲酸 28547-23-1 详细
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