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    中文名称 英文名称 CAS号 化学式
    2’-甲酰(1,1’-联苯)-2-羧酸 2-(2-formyl-phenyl)-benzoic acid 6720-26-9 C14H10O3
    2’-氯-联苯-3-甲醛 2'-chloro-[1,1'-biphenyl]-3-carbaldehyde 675596-30-2 C13H9ClO
    2’-乙氧基羰基甲氧基-4’-(3-甲基-2-丁烯氧基)苯乙酮 2-(ethoxycarbonylmethoxy)-4-(3-methyl-2-butenyloxy)-acetophenone 64506-46-3 C17H22O5
    2’-丁氧基-2,6-二氨基-3,5’-偶氮吡啶 Niazo 617-19-6 C14H18N6O
    2’-(beta-溴乙基磷酰)-5’-硝基十六烷苯胺 2'-(β-Bromethylphosphoryl)-5'-nitro-hexadecananilid 60301-90-8 C24H40BrN2O7P
    2’,3’,4’,5’-四氟苯乙酮 2',3',4',5'-tetrafluoroacetophenone 66286-21-3 C8H4F4O
    2Α-羟甲基-17Β-羟基-17Α-乙炔基-雄甾-4-烯-3-酮 2-Hydroxymethylethisterone 67110-85-4 C22H30O3
    2ˊ-脱氧胞苷-3ˊ-一磷酸 2'-deoxycytidine 3'-monophosphate 6220-63-9 C9H14N3O7P
    2lambda3-氯-2-甲基-1(5)-苯并硒唑 3-Chloro-2-methyl-1,2lambda(5)-benzoselenazole 60940-25-2 C8H7ClNSe+
    2alpha,3beta-[[(3aR,4S,7aR)-7,7alpha-二氢-4H-1,3-二氧杂环戊并[4,5-c]吡喃-3a,4(6H)-二基]二(氧基)]-11alpha,14-二羟基-12-氧代心甾-4,20(22)-二烯内酯 Elaeodendroside A 64144-98-5 C29H36O10
    2a,3,5,6,11a,11b-六氢-3-羟基-2a,6,10-三甲基-3-(1-甲基丙基)-6,9-环氧-2H-1,4-二氧杂环癸[cd]并环戊二烯-2,7(4ah)-二酮 Eremantholide B 69883-96-1 C20H26O6
    2a,3,3a,5a,6,6a,6b,6c-八氢-二环戊烷并(cd,gh)并环戊二烯 Dodecahydrodicyclopenta[cd,gh]pentalene 60606-96-4 C12H18
    2a,2b,4a,4b-四氢-环丙并(cd)并环戊二烯 semibullvalene 6909-37-1 C8H8
    2`,4-二羟基-3`,4`,6`-三甲氧基查尔酮 2',4-hydroxy-3',4',6'-trimethoxychalcone 69616-74-6 C18H18O6
    2H-苯并咪唑-2-酮 1-(2-hydroxy-ethyl)-1,3-dihydro-benzoimidazol-2-one 63388-01-2 C9H10N2O2
    2H-苯并[4,5]噻唑并[2,3-c][1,2,4]噻唑-3-硫酮 benzo[4,5]thiazolo[2,3- c][1,2,4]triazole-3-thiol 6957-85-3 C8H5N3S2
    2H-四唑高氯酸盐 tetrazolium perchlorate 64890-08-0 CH2N4*ClHO4
    2H-噻喃-3,5(4H,6H)-二酮 tetrahydrothiopyran-3,5-dione 6881-49-8 C5H6O2S
    2H-吡嗪并[1,2-a]氮杂环辛四烯 2h-Pyrazino[1,2-a]azocine 638200-05-2 C10H10N2
    2H-吡喃-6-甲醛 Pyralene 62251-11-0 C6H6O2
    2H-吡喃-3,5(4H,6H)-二酮 2H-pyran-3,5(4H,6H)-dione 61363-56-2 C5H6O3
    2H-吡喃-2-酮-6-羧酸 2-oxo-2H-pyran-6-carboxylic acid 672-67-3 C6H4O4
    2H-吡啶并[3,2-D][1,3]恶嗪-2,4(1H)-二酮 2H-pyrido[3,2-d][1,3]oxazine-2,4-(1H)-dione 63016-85-3 C7H4N2O3
    2H-九氟丁烷 2H-nonafluorobutane 680-17-1 C4HF9
    2H-[1,2,4]噻唑-3-磺酰氯 1H-1,2,4-triazole-3-sulfonyl chloride 6461-29-6 C2H2ClN3O2S
    2H,4h,5h,6h,7h,7ah-噻吩并[3,2-c]吡啶-2-酮盐酸盐 3-methylbiphenyl-4-amine 63019-98-7 C13H13N
    2ALPHA-羟基羽扇豆醇 2α,3β-dihydroxylup-20(29)-ene 61448-03-1 C30H50O2
    27-去甲-3,7,12-三氢粪甾烷-24-酮 27-nor-3α,7α,12α-trihydroxycoprostan-24-one 61628-32-8 C26H44O4
    26-羟基胆骨化醇 26-Hydroxycholecalciferol 69556-15-6 C27H44O2
    26-(4-壬基苯氧基)-3,6,9,12,15,18,21,24-八氧杂二十六烷-1-基乙酸酯 26-(4-Nonylphenoxy)-3,6,9,12,15,18,21,24-octaoxahexacosan-1-yl acetate 67845-40-3 C35H62O11
    25-羟基胆固醇基油酸酯 25-Hydroxycholesteryl oleate 68947-34-2 C45H78O3
    25-羟基维他命D33-半琥珀酸盐 25-hydroxyvitamin D3 3-hemisuccinate 69511-19-9 C31H48O5
    25-氟胆固醇 25-fuoro-5-cholesten-3β-ol 64164-45-0 C27H45FO
    25-去(1-甲基丙基)-25-(1-甲基乙基)-阿维菌素A1a Avermectin A<sub>1b</sub> 65195-52-0 C48H72O14
    25-二羟基维生素D2 ercalcitriol 60133-18-8 C28H44O3
    246-三甲基三苯胺 2,4,6-trimethyl-N,N-diphenylaniline 603134-65-2 C21H21N
    24-去氢胆骨化醇 (1R,3Z)-3-[(2E)-2-[(1R,3aS,7aR)-7a-methyl-1-[(2R)-6-methylhept-5-en-2-yl]-2,3,3a,5,6,7-hexahydro-1H-inden-4-ylidene]ethylidene]-4-methylidenecyclohexan-1-ol 63819-59-0 C27H42O
    24,25-二羟基达马树脂-20-烯-3-酮 24(R),25-dihydroxydammar-20-en-3-one 63543-53-3 C30H50O3
    23-O-乙酰基-升麻新醇木糖苷 23-O-acetylshengmanol-3-O-β-D-xylopyranoside 62498-88-8 C37H58O10
    22-二十三碳烯酸 ω-tricosenoic acid 65119-95-1 C23H44O2
    22,29,30-三去甲新何帕-13(18)-烯 22,29,30-trinor-28(18-> 17S)abeo-hop-13(18)-ene 63543-60-2 C27H44
    22,23-二氧杂-9-硫杂-2,16-二氮杂四环[15.3.1.14,7.111,14]二十三碳-4,6,11,13,17,19,21(1)-七烯-3,15-二酮 22,23-Dioxa-9-thia-2,16-diazatetracyclo(15.3.1.1(sup 4,7).1(sup 11,14))tricosa-1(21),4,6,11,13,17,19-heptaene-3,15-dione 67364-56-1 C18H14N2O4S
    22,23-二氧杂-9-硫杂-2,16-二氮杂四环[15.2.2.14,7.111,14]二十三碳-4,6,11,13,17,19(1),20-七烯-3,15-二酮 22,23-Dioxa-9-thia-2,16-diazatetracyclo(15.2.2.1(sup 4,7).1(sup 11,14))tricosa-1(21),4,6,11,13,17,19,20-heptaene-3,15-dione 67364-57-2 C18H14N2O4S
    22,23-二氧杂-3-硫杂-10,17-二氮杂三环[17.2.1.15,8]二十三碳-5,7,19,21(1)-四烯-9,18-二酮 22,23-Dioxa-3-thia-10,17-diaza-tricyclo[17.2.1.1<sup>5,8</sup>]tricosa-1(21),5,7,19-tetraene-9,18-dione 67364-54-9 C18H22N2O4S
    21-（乙酰氧基）-9,11-环氧-6-氟壳酮 21-(Acetyloxy)-9,11-epoxy-6-fluocortolone 61618-91-5 C24H29FO5
    21-脱氧四氢醛甾酮 21-Deoxytetrahydroaldosterone 6251-70-3 C21H32O4
    21-脱氢氯可酮 6α-fluoro-9α-chloro-11β-hydroxy-3,20-dioxo-16α-methyl-1,4-pregnadien-21-al 61744-29-4 C22H26ClFO4
    21-羟基-20-甲基孕甾-4-烯-3-酮 21-hydroxy-20-methylpregn-4-en-3-one 60966-36-1 C22H34O2
    21-溴-17-羟基-孕-4,9(11)-二烯-3,20-二酮 21-bromo-17-hydroxy-pregna-4,9(11)-diene-3,20-dione 63973-98-8 C21H27BrO3
    21-氨基-N-[2-[[2-[[2-[(2-氨基乙基)氨基]乙基]氨基]乙基]氨基]乙基]-9-(1-羟基壬基)-9,12,15,18-四氮杂二十一烷酰胺 3,6,9,12-Tetraazaheneicosan-21-amide, 1-amino-N-(2-((2-((2-((2-aminoethyl)amino)ethyl)amino)ethyl)amino)ethyl)-13-(1-hydroxynonyl)- 68298-14-6 C34H78N10O2