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    中文名称 英文名称 CAS号 化学式
    3,4-嘧啶乙二酸二乙酯 diethyl pyridine-3,4-dicarboxylate 1678-52-0 C11H13NO4
    3,4-哒嗪二甲酸 pyridazine-3,4-dicarboxylic acid 129116-97-8 C6H4N2O4
    3,4-哌啶二醇,5-(羟甲基)-,(3R,4S,5S)-rel- 3-(3-Chloropropyl)-5-methylisoxazole 178396-19-5 C7H10ClNO
    3,4-呋喃二羧酸,2-甲氧基-5-甲基-,二甲基酯 Dimethyl 2-methoxy-5-methylfuran-3,4-dicarboxylate 105495-05-4 C10H12O6
    3,4-吡啶二羧酸二甲酯 dimethyl 3,4-pyridinedicarboxylate 1796-83-4 C9H9NO4
    —— 2-Methoxy-6-methyl-pyridin-3,4-dicarbonsaeure 103441-88-9 C9H9NO5
    3,4-吡啶二羧酸,2-氰基-5-(二乙胺基)-1,6-二氢-1-甲基-6-羰基-,二甲基酯 dimethyl 2-cyano-5-(diethylamino)-1,6-dihydro-1-methyl-6-oxo-3,4-pyridinedicarboxylate 139706-36-8 C15H19N3O5
    3,4-吡唑烷二羧酸,2-甲基-5-(1,2,3,4-四氢-1,3,6-三甲基-2,4-二羰基-5-嘧啶基)-,二甲基酯 3-(1,2,3,4-tetrahydro-1,3,6-trimethyl-2,4-dioxo-5-pyrimidinyl)-4,5-bis(methoxycarbonyl)-1-methylpyrazolidine 133546-36-8 C15H22N4O6
    3,4-吡咯烷二醇,2-(氨基甲基)-5-(羟甲基)-,(2R,3R,4R,5R)- 1-amino-1,2,5-trideoxy-2,5-imino-D-mannitol 194288-65-8 C6H14N2O3
    3,4-吡咯烷二醇,2-(4-溴苯基)-5-(羟甲基)-,(2S,3S,4R,5R)- (R)-2-methyl-2,3-dihydro-4H-pyran-4-one 190912-17-5 C6H8O2
    3,4-吡咯烷二醇,2,5-二甲基-1-(苯基甲基)-,(2R,3R,4S,5S)-rel- hydroxyzine 189298-45-1 C21H27ClN2O2
    3,4-双邻乙酰基-6-邻-(叔丁基二苯基甲硅烷基)-D-葡萄烯糖 3,4-Di-O-acetyl-6-O-(tert-butyldiphenylsilyl)-D-glucal 151797-32-9 C26H34O8Si
    3,4-双二甲基氨基-3-环丁烯-1,2-二酮 3,4-bis(dimethylamino)-3-cyclobutene-1,2-dione 19230-34-3 C8H12N2O2
    3,4-双乙酸基-1丁烯 1,2-diacetoxy-3-butene 18085-02-4 C8H12O4
    3,4-双三氟甲基苯甲酸 bis(3,4-(trifluoromethyl)benzoic acid) 133804-66-7 C9H4F6O2
    3,4-双{[2-(甲基氧基)乙基]氧基}苯甲酸甲酯 methyl 3,4-bis{[2-(methyloxy)ethyl]oxy}benzoate 179688-14-3 C14H20O6
    3,4-双[[(4-甲基苯基)磺酰基]氨基]苯甲酸甲酯 methyl 3,4-diamino-N,N-bis-(toluene-4-sulfonylamino)benzoate 175204-19-0 C22H22N2O6S2
    3,4-双(苄氧基)-5-硝基苯甲酸甲酯 Methyl 3-nitro-4,5-bis(phenylmethoxy)benzoate 1391712-04-1 C22H19NO6
    3,4-双(甲氧羰基)苯硼酸 (3,4-bis(methoxycarbonyl)phenyl)boronic acid 1072951-51-9 C10H11BO6
    3,4-双(环丙基甲氧基)-n-(3,5-二氯吡啶-4-基)苯甲酰胺 3,4-bis(cyclopropylmethoxy)-N-(3,5-dichloropyridin-4-yl) benzamide 1391052-24-6 C20H20Cl2N2O3
    3,4-双(十二烷氧基)-5-羟基苯甲酸乙酯 ethyl 3,4-bis(dodecyloxy)-5-hydroxybenzoate 1041778-76-0 C33H58O5
    3,4-双(二溴甲基)苯甲酸 3,4-bis(dibromomethyl)benzoic acid 19047-21-3 C9H6Br4O2
    3,4-双(二氟甲氧基)苯甲醛 3,4-bis-(difluoromethoxy)-benzaldehyde 127842-54-0 C9H6F4O3
    3,4-双(二氟甲氧基)苯甲酸 3,4-Bis(difluoromethoxy) benzoic acid 162401-60-7 C9H6F4O4
    3,4-双(乙氧基甲氧基)苯甲醛 3,4-diethoxymethoxybenzaldehyde 128837-28-5 C13H18O5
    3,4-双(丙氨基)杂螺环-3-烯-1,2-二酮 3,4-Bis(propylamino)cyclobut-3-ene-1,2-dione 175204-26-9 C10H16N2O2
    3,4-双(三甲基硅氧基)苯甲醛 3,4-bis(trimethylsiloxy)-benzaldehide 10586-13-7 C13H22O3Si2
    3,4-双(三氟甲基)苯硼酸 [3,4-bis(trifluoromethyl)phenyl]boronic acid 1204745-88-9 C8H5BF6O2
    3,4-双(三氟甲基)硝基苯 4-Nitro-1.2-bis-trifluormethyl-benzol 1978-20-7 C8H3F6NO2
    3,4-双(4-羟基苯基)环丁烷-1,2-二羧酸 p-hydroxytruxinic acid 133097-99-1 C18H16O6
    3,4-双((4-甲氧基苄基)氧基)-N-(2-(吡咯烷-1-基)乙基)苯甲酰胺 3,4-bis((4-methoxybenzyl)oxy)-N-(2-(pyrrolidin-1-yl)ethyl)benzamide 1225208-49-0 C29H34N2O5
    3,4-去氟吉非替尼杂质 Gefitinib 3,4-difluoro impurity hydrochloride 184475-68-1 C22H25ClF2N4O3
    3,4-亚甲基二氧溴苯 methyl 4-(bromomethyl)-3-fluorobenzoate 128577-47-9 C9H8BrFO2
    3,4-亚甲基二氧基亚苄基苯甲胺 N-benzylidene piperonylamine 112776-37-1 C15H13NO2
    3,4-亚甲基二氧基乙酰苯胺 3,4-methylenedioxyacetanilide 13067-19-1 C9H9NO3
    3,4-亚甲二氧基苯胺 benzo[1,3]dioxolo-5-ylamine 14268-66-7 C7H7NO2
    3,4-亚甲二氧基苯乙胺 homopiperonylamine hydrochloride 1653-64-1 C9H11NO2*ClH
    3,4-亚甲二氧基肉桂醛 3,4-methylenedioxycinnamaldehyde 14756-00-4 C10H8O3
    3,4-亚甲二氧基肉桂基羟基哌啶 2-[(E)-3-(1,3-benzodioxol-5-yl)prop-2-enyl]-1-hydroxypiperidine 122427-16-1 C15H19NO3
    3,4-亚甲二氧基-alpha-苯基-4'-[2-(1-吡咯烷基)乙氧基]查耳酮 3-(3,4-Methylenedioxyphenyl)-2-phenyl-4'-beta-pyrrolidinoethoxyacrylophenone 15272-65-8 C28H27NO4
    3,4-亚甲二氧-beta-硝基苯乙烯 5-(2-nitrovinyl)benzo[1,3]dioxole 1485-00-3 C9H7NO4
    3,4-亚丙基二氧噻吩-2,5-二羧酸 3,4-dihydro-2H-thieno[3,4-b][1,4]dioxepine-6,8-dicarboxylic acid 177364-98-6 C9H8O6S
    3,4-亚丙基二氧噻吩 3,4-(propane-1,3-diyldioxy)thiophene 155861-77-1 C7H8O2S
    3,4-二辛基噻吩 3,4-dioctylthiophene 161746-06-1 C20H36S
    3,4-二辛基-己烷-2,5-二酮二肟 3,4-dioctyl-hexane-2,5-dione dioxime 102885-70-1 C22H44N2O2
    3,4-二辛基-己烷-2,5-二酮 3,4-dioctyl-hexane-2,5-dione 102885-11-0 C22H42O2
    3,4-二萘-2-基噻吩 3,4-Di(naphthalen-2-yl)thiophene 100990-31-6 C24H16S
    3,4-二苯甲酰基-5-羟基-5H-呋喃-2-酮 3,4-dibenzoyl-2-hydroxy-2H-furan-5-one 104919-88-2 C18H12O5
    3,4-二苯基苯胺 4'-amino-o-terphenyl 10569-67-2 C18H15N
    3,4-二苯基硒吩 3,4-diphenylselenophene 113495-68-4 C16H12Se