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中文名称 英文名称 CAS号 化学式 结构式图片
4`,5`-双[N,N-二(羧甲基)氨甲基]荧光素 calcein 207124-64-9 C30H26N2O13
4`,5`-双[N,N-二(羧甲基)氨甲基]荧光素
4R)(2S,4R)(2S,4R)(2S,4R)(2S,4R)-5-氨基-2-铵基-4-氟-5-氧代戊酸酯 (2S,4R)-4-fluoroglutamine 238418-71-8 C5H9FN2O3
4R)(2S,4R)(2S,4R)(2S,4R)(2S,4R)-5-氨基-2-铵基-4-氟-5-氧代戊酸酯
4H-茚并[5,6-c][1,2]恶唑 4H-Indeno[5,6-C][1,2]oxazole 28648-21-7 C10H7NO
4H-茚并[5,6-c][1,2]恶唑
4H-苯并[f]喹啉-3-酮 benzo<f>quinolin-1(2H)-one 23981-08-0 C13H9NO
4H-苯并[f]喹啉-3-酮
4H-环戊并[2,1-B:3,4-B']二噻吩-4-酮 4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one 25796-77-4 C9H4OS2
4H-环戊并[2,1-B:3,4-B']二噻吩-4-酮
4H-环戊二烯并[d]嘧啶 4H-Cyclopenta[d]pyrimidine 270-96-2 C7H6N2
4H-环戊二烯并[d]嘧啶
4H-环戊二烯并[b]喹喔啉 4H-Cyclopenta[b]quinoxaline 269-66-9 C11H8N2
4H-环戊二烯并[b]喹喔啉
4H-环五菲 4H-Cyclopenta[def]phenanthrene 203-64-5 C15H10
4H-环五菲
4H-噻吩并[3,2-c]苯并吡喃-2-羧酸 4H-thieno[3,2-c]-chromene-2-carboxylic acid 26268-04-2 C12H8O3S
4H-噻吩并[3,2-c]苯并吡喃-2-羧酸
4H-嘧啶并[5,4-d][1,3]恶嗪 4H-Pyrimido[5,4-d][1,3]oxazine 28647-47-4 C6H5N3O
4H-嘧啶并[5,4-d][1,3]恶嗪
4H-咪唑并[4,5-d]哒嗪-4-酮,3,5-二氢-5-[(苯基甲氧基)甲基]- Potassium nonylphenolate 27936-43-2 C15H23KO
4H-咪唑并[4,5-d]哒嗪-4-酮,3,5-二氢-5-[(苯基甲氧基)甲基]-
4H-咪唑并[4,5,1-Ij]喹啉 4h-Imidazo[4,5,1-ij]quinoline 209-28-9 C10H8N2
4H-咪唑并[4,5,1-Ij]喹啉
4H-咪唑并[1,5,4-去]喹喔啉 4h-Imidazo[1,5,4-de]quinoxaline 209-29-0 C9H7N3
4H-咪唑并[1,5,4-去]喹喔啉
4H-咪唑并[1,5,4-Ef][1,5]苯并硫氮杂卓 6H-Imidazo[1,5,4-ef][1,5]benzothiazepine 254757-43-2 C10H8N2S
4H-咪唑并[1,5,4-Ef][1,5]苯并硫氮杂卓
4H-咪唑 1H-2,2,4-triazole 288-30-2 C3H4N2
4H-咪唑
4H-呋喃并[3,2-b]吡咯 furo<3,2-b>pyrrole 250-91-9 C6H5NO
4H-呋喃并[3,2-b]吡咯
4H-吡喃并[4,3-c]异噻唑,6,7-二氢-6,6-二甲基-3-苯基- 1-(Ethylthio)-2-fluorobenzene 252555-43-4 C8H9FS
4H-吡喃并[4,3-c]异噻唑,6,7-二氢-6,6-二甲基-3-苯基-
4H-吡喃并[2,3-b]吡啶-4-酮 4H-Pyrano[2,3-b]pyridin-4-one 22052-71-7 C8H5NO2
4H-吡喃并[2,3-b]吡啶-4-酮
4H-吡喃-2,6-二甲酸 4<i>H</i>-Pyran-2,6-dicarbonsaeure 23047-07-6 C7H6O5
4H-吡喃-2,6-二甲酸
4H-吡喃 4H-pyran 289-65-6 C5H6O
4H-吡喃
4H-吡啶并[1,2-a]嘧啶-4-酮 pyrido[1,2-a]pyrimidin-4-one 23443-10-9 C8H6N2O
4H-吡啶并[1,2-a]嘧啶-4-酮
4H-吡唑并[3,4-d]嘧啶 4H-Pyrazolo[3,4-d]pyrimidine 271-76-1 C5H4N4
4H-吡唑并[3,4-d]嘧啶
4H-吡唑并[1,5-a]苯并咪唑-6-胺 6-amino-pyrazolo[1,5-a]benzimidazole 217318-25-7 C9H8N4
4H-吡唑并[1,5-a]苯并咪唑-6-胺
4H-吡唑并[1,5-a]苯并咪唑-2,3-二胺 1H-pyrazolo[1,5-a]benzimidazole-2,3-diamine 227611-69-0 C9H9N5
4H-吡唑并[1,5-a]苯并咪唑-2,3-二胺
4H-吡唑并[1,5-a]嘧啶-7-酮 4H-Pyrazolo[1,5-a]pyrimidin-7-one 29274-23-5 C6H5N3O
4H-吡唑并[1,5-a]嘧啶-7-酮
4H-吡咯并[2.3-d][1,3]噻唑-5-羧酸乙酯 ethyl 4H-pyrrolo[2,3-d]thiazole-5-carboxylate 238749-53-6 C8H8N2O2S
4H-吡咯并[2.3-d][1,3]噻唑-5-羧酸乙酯
4H-吡咯并[2,3-d]噻唑 4H-pyrrolo[2,3-d]thiazole 298699-45-3 C5H4N2S
4H-吡咯并[2,3-d]噻唑
4H-吡咯并[2,3-D]嘧啶 4H-Pyrrolo[2,3-d]pyrimidine 271-68-1 C6H5N3
4H-吡咯并[2,3-D]嘧啶
4H-吡咯并[1,2-a]苯并咪唑 4H-Pyrrolo<1,2-a>benzimidazol 24990-52-1 C10H8N2
4H-吡咯并[1,2-a]苯并咪唑
4H-吡咯并[1,2-a]噻吩并[3,2-D]咪唑 4h-Pyrrolo[1,2-a]thieno[3,2-d]imidazole 260053-86-9 C8H6N2S
4H-吡咯并[1,2-a]噻吩并[3,2-D]咪唑
4H-吡咯并[1,2-a]吲哚 9H-pyrrolo<1,2-a>indole 247-66-5 C11H9N
4H-吡咯并[1,2-a]吲哚
4H-[1,3]恶唑并[5,4,3-Ij]喹啉-2,6(5H)-二酮 4,5-Dihydro-2H,6H-[1,3]oxazolo[5,4,3-ij]quinoline-2,6-dione 28884-03-9 C10H7NO3
4H-[1,3]恶唑并[5,4,3-Ij]喹啉-2,6(5H)-二酮
4H-[1,3]噻嗪并[3,2-a]苯并咪唑 4H-benzimidazo[2,1-b][1,3]thiazine 245-57-8 C10H8N2S
4H-[1,3]噻嗪并[3,2-a]苯并咪唑
4H-[1,3]二恶英并[4,5-c]吡啶 2H,4H-[1,3]Dioxino[4,5-c]pyridine 254-30-8 C7H7NO2
4H-[1,3]二恶英并[4,5-c]吡啶
4H-8-溴-1,2,4-噁二唑(3,4-d)苯并(b)(1,4)噁嗪-1-酮 4H-8-bromo-1,2,4-oxadiazolo(3,4-d)benz(b)(1,4)oxazin-1-one 204326-43-2 C9H5BrN2O3
4H-8-溴-1,2,4-噁二唑(3,4-d)苯并(b)(1,4)噁嗪-1-酮
4H-1-苯并噻喃-4-酮 1,1-二氧化物 1-thiochromone 1,1-dioxide 22810-27-1 C9H6O3S
4H-1-苯并噻喃-4-酮 1,1-二氧化物
4H-1-苯并吡喃-3-甲醛,2-氨基-6,8-二氯-4-羰基- Tetrasodium 4,4'-bis(4-(p-sulphonatophenyl)-2H-1,2,3-triazol-2-yl)stilbene-2,2'-disulphonate 24239-35-8 C30H18N6Na4O12S4
4H-1-苯并吡喃-3-甲醛,2-氨基-6,8-二氯-4-羰基-
4H-1,4-恶嗪 4H-1,4-oxazine 290-47-1 C4H5NO
4H-1,4-恶嗪
4H-1,3-苯并二氧杂环己烷-7-羧酸 4h-1,3-Benzodioxine-7-carboxylic acid 259795-37-4 C9H8O4
4H-1,3-苯并二氧杂环己烷-7-羧酸
4H-1,3-苯并二氧杂环己烷 4H-1,3,2-benzodioxin 254-27-3 C8H8O2
4H-1,3-苯并二氧杂环己烷
4H-1,3-二噁唑并[4,5-c]吡咯,4-[[[(1,1-二甲基乙基)二甲基甲硅烷基]氧代]甲基]-6-(1,3-二硫烷-2-基)四氢-2,2-二甲基-,(3aR,4R,6R,6aS)- 9-fluoro-1,2,3,4-tetrahydro-pyrazino[1,2-a]indole 256930-21-9 C11H11FN2
4H-1,3-二噁唑并[4,5-c]吡咯,4-[[[(1,1-二甲基乙基)二甲基甲硅烷基]氧代]甲基]-6-(1,3-二硫烷-2-基)四氢-2,2-二甲基-,(3aR,4R,6R,6aS)-
4H-1,2,4-噻唑-4-丙醇 3-(4H-1,2,4-triazol-4-yl)propan-1-ol 27106-94-1 C5H9N3O
4H-1,2,4-噻唑-4-丙醇
4H-1,2,4-三唑-4-胺 4-amino-1,2,4-triazol-1-ium chloride 25545-88-4 C2H4N4*ClH
4H-1,2,4-三唑-4-胺
4H-1,2,4-三唑-3,4-二胺氢溴酸盐 3,4-diamino-1,2,4-triazole hydrobromide 23160-99-8 BrH*C2H5N5
4H-1,2,4-三唑-3,4-二胺氢溴酸盐
42-(2-四唑基)雷帕霉素 42-(2-tetrazolyl)-rapamycin 221877-56-1 C52H79N5O12
42-(2-四唑基)雷帕霉素
4.5-二氯荧光黄4.5-二氯-3.6-荧烷二醇 4',5'-Dichlorofluorescein 2320-96-9 C20H10Cl2O5
4.5-二氯荧光黄4.5-二氯-3.6-荧烷二醇
4.4-二甲基-5-羟基戊腈 4,4-dimethyl-5-hydroxyvaleronitrile 25252-68-0 C7H13NO
4.4-二甲基-5-羟基戊腈
4.4'-[1.4-亚苯基双(乙炔-2.1-二基)]二苯甲酸 1,4-bis(2-[4-carboxyphenyl]ethynyl)benzene 217077-89-9 C24H14O4
4.4'-[1.4-亚苯基双(乙炔-2.1-二基)]二苯甲酸
4-(6-羟基己-1-炔-1-基)苯甲酸甲酯 methyl 4-(6-hydroxyhex-1-yn-1-yl)benzoate 222983-64-4 C14H16O3
4-(6-羟基己-1-炔-1-基)苯甲酸甲酯
4-(2-酮酸-1-苯并咪唑)哌啶 4-(2-keto-1-benzimidazolinyl)piperidine 20662-53-7 C12H15N3O
4-(2-酮酸-1-苯并咪唑)哌啶