| 中文名称 | 英文名称 | CAS号 | 化学式 |
|---|---|---|---|
| 4,5-二氯-1,2-苯醌 | 4,5-dichloro-1,2-benzoquinone | 18268-81-0 | C6H2Cl2O2 |
| 4,5-二氮芴-9-酮 | 4,5-Diazafluoren-9-one | 50890-67-0 | C11H6N2O |
| 4,5-二氢环戊并[b]噻吩-6-酮 | 4,5-dihydro-6H-cyclopenta[b]thiophen-6-one | 5650-52-2 | C7H6OS |
| 4,5-二氢-5-羰基-4-[[4-[[[3-[[2-(磺酸根氧代)乙基]磺基基]苯基]氨基]羰基]苯基]偶氮]-1-(4-磺酸根苯基)-1H-吡唑-3-羧酸三钠 | Adddea | 146763-21-5 | C35H66N2O11 |
| 4,5-二氢-1,3-二甲基-4-(2-丙炔基)-1H-吡唑并[3,4-b][1,4]苯并氧氮杂卓 | 1,3-dimethyl-4-prop-2-ynyl-4,5-dihydro-1<i>H</i>-benzo[<i>f</i>]pyrazolo[3,4-<i>b</i>][1,4]oxazepine | 22086-98-2 | C15H15N3O |
| 4,5-二氢-1,2,3-恶二唑 | 4,5-Dihydro-1,2,3-oxadiazole | 13589-37-2 | C2H4N2O |
| 4,5-二氟苯并(a)芘 | beta-Cyclodextrin, indomethacin drug combination | 71267-09-9 | C103H156ClNO74 |
| 4,5-二氟苯并(a)芘 | 2-[1-(4-chlorobenzoyl)-5-methoxy-2-methylindol-3-yl]acetic acid;(1S,3R,5R,6S,8R,10R,11S,13R,15R,16S,18R,20R,21S,23R,25R,26S,28R,30R,31S,33R,35R,36R,37R,38R,39R,40R,41R,42R,43R,44R,45R,46R,47R,48R,49R)-5,10,15,20,25,30,35-heptakis(hydroxymethyl)-2,4,7,9,12,14,17,19,22,24,27,29,32,34-tetradecaoxaoctacyclo[31.2.2.23,6.28,11.213,16.218,21.223,26.228,31]nonatetracontane-36,37,38,39,40,41,42,43,44,45,46,47,48,49-tetradecol | 71299-82-6 | C61H86ClNO39 |
| 4,5-二氟-2,2-二(三氟甲基)-1,3-二氧杂环戊烯 | 2,2-bis(trifluoromethyl)-4,5-difluoro-1,3-dioxole | 37697-64-6 | C5F8O2 |
| 4,5-二异丙基-2,7-辛烷二酮 | 4,5-diisopropyl-octane-2,7-dione | 29210-63-7 | C14H26O2 |
| 4,5-二乙炔基-6-甲氧基嘧啶 | 4,5-Diethynyl-6-methoxypyrimidine | 86854-61-7 | C9H6N2O |
| 4,5-二乙氧基-辛烷 | 4,5-diethoxy-octane | 100392-86-7 | C12H26O2 |
| 4,5-二-吗啉-4-基-[1,2]对苯醌 | 4,5-dimorpholino-[1,2]benzoquinone | 4608-10-0 | C14H18N2O4 |
| 4,5,7-邻乙酰基-2,6-酐-3-脱氧-d-lyxo-2-庚烯腈 | hepta-O-acetyl-α-laminarabiosyl bromide | 23202-66-6 | C26H35BrO17 |
| 4,5,6-三羟基-2-氧代-7-膦酰氧基庚酸 | 2-dehydro-3-deoxy-7-phosphono-D-arabino-heptanoic acid | 2627-73-8 | C7H13O10P |
| 4,5,6-三甲基-庚烷-3-酮 | 4,5,6-Trimethyl-3-heptanon | 70358-88-2 | C10H20O |
| 4,5,6,7-四氢吡唑并[1,5-a]吡啶-3-甲醛 | 4,5,6,7-tetrahydropyrazolo[1,5-a]pyridine-3-carbaldehyde | 307308-03-8 | C8H10N2O |
| 4,5,6,7-四氢吡唑并[1,5-a]吡啶-2-甲醛 | 4,5,6,7-tetrahydropyrazolo[1,5-a]pyridine-2-carbaldehyde | 307313-06-0 | C8H10N2O |
| 4,5,6,7-四氢-4-苯并噻吩 | 4-keto-4,5,6,7-tetrahydrothianaphthene | 13414-95-4 | C8H8OS |
| 4,5,6,7-四氢-3-甲氧基-异恶唑并[4,5-c]吡啶 | OMe-THPO | 95579-17-2 | C7H10N2O2 |
| 4,5,6,7-四氢-1-苯并噻吩-3-甲醛 | 4,5,6,7-tetrahydrobenzo[b]thiophene-3-carbaldehyde | 851634-60-1 | C9H10OS |
| 4,5,6,7-四氢-1,3-苯并噻唑-2-甲醛 | 4,5,6,7-tetrahydrobenzo[d]thiazole-2-carbaldehyde | 884504-72-7 | C8H9NOS |
| 4,5,6,7,8,9-六羟基-2-氧代-壬酸 | 3-deoxy-D-glycero-D-galacto-2-nonulosonic acid | 22594-61-2 | C9H16O9 |
| 4,5,6,7,7-五甲基辛-4-烯-3-酮 | 2'-Guanidyl-2'-deaminogentamicin C1 | 82089-23-4 | C22H45N7O7 |
| 4,5,5-三甲基-环己烷-1,3-二酮 | 5,5,6-Trimethyl-cyclohexan-1,3-dion | 18456-85-4 | C9H14O2 |
| 4,5,5-三甲基-2-庚酮 | 4,5,5-trimethyl-2-heptanone | 79996-74-0 | C10H20O |
| 4,5,5,5-四氟-4-(三氟甲基)戊烷-2-酮 | 4,5,5,5-Tetrafluoro-4-(trifluoromethyl)pentan-2-one | 261760-96-7 | C6H5F7O |
| 4,5,5,5-四氟-4-(三氟甲基)戊烷-1-醇 | 4,5,5,5-tetrafluoro-4-trifluoromethylpentanol | 29819-73-6 | C6H7F7O |
| 4,5,10,11-四正辛基蒽[2,1:b,6,5:b']二噻吩 | 4,5,10,11-Tetra-n-octyl-anthra[2,1:b ,6,5:b' ]dithiophene | 1356371-05-5 | C16H14Br2O2S2 |
| 4,4’-联苯醌 | diphenoquinone | 494-72-4 | C12H8O2 |
| 4,4’-异亚丙基苯酚与甲醛的聚合物 | Formaldehyde; 4-[2-(4-hydroxyphenyl)propan-2-yl]phenol | 25085-75-0 | C16H18O3 |
| 4,4’-二溴二苯并-18-冠醚-6 | 4-bromo-dibenzo-18-crown-6 | 87016-67-9 | C20H23BrO6 |
| 4,4a,6,7,8,8alpha-六氢-1,4-甲桥萘-5(1H)-酮 | tricyclo[6.2.1.02,7 ]undec-9-en-3-one | 51519-65-4 | C11H14O |
| 4,4a,5,6-四氢-6-异丙基-4,4a-二甲基萘-2(3H)-酮 | (1R,2R,6R,8R,9R)-1,9-Dihydroxy-4,4-dimethyl-3,5,7-trioxatricyclo[6.3.0.0<sup>2.6</sup>]undec-10-ene | 352422-81-2 | C10H14O5 |
| 4,4a,5,6,7,8-六氢-4a,8-二甲基萘-2(3H)-酮 | rac-4a,8-dimethyl-3,4,4a,5,6,7,8-heptahydronaphthalen-2-one | 4071-63-0 | C12H18O |
| 4,4a,5,6,7,8-六氢-4a,5-二甲基萘-2(3H)-酮 | 5,10-dimethyl-Δ<sup>1(9)</sup>-2-octalone | 93777-43-6 | C12H18O |
| 4,4a,5,6,7,8-六氢-3H-萘-2-酮 | 4,4a,5,6,7,8-hexahydronaphthalen-2(3H)-one | 1196-55-0 | C10H14O |
| 4,4a,5,6,7,8-六氢-3-甲基萘-2(3H)-酮 | 3-methyl-4,4a,5,6,7,8-hexahydro-3<i>H</i>-naphthalen-2-one | 30297-14-4 | C11H16O |
| 4,4A,5,6-四氢-7-异丙基-4,4A-二甲基萘-2(3H)-酮 | 4,4a,5,6-Tetrahydro-7-isopropyl-4,4a-dimethylnaphthalene-2(3H)-one | 93840-79-0 | C15H22O |
| 4,4:7,7-二(亚乙二氧基)辛醛 | 4,4:7,7-bis(ethylenedioxy)octanal | 81740-53-6 | C12H20O5 |
| 4,4-正丙基环己酮 | 4,4-di-n-propylcyclohexanone | 123018-62-2 | C12H22O |
| 4,4-双丙基环己酮 | 4,4-dipropylcyclohex-2-en-1-one | 60729-41-1 | C12H20O |
| 4,4-双(甲氧甲基)-2,6-二甲基庚烷 | 4,4-bis (methoxymethyl)-2,6-dimethylheptane | 129228-07-5 | C13H28O2 |
| 4,4-亚乙二氧基-2,6-二甲基-2,5-环己二烯-1-酮 | 7,9-dimethyl-1,4-dioxaspiro[4.5]deca-6,9-dien-8-one | 85268-20-8 | C10H12O3 |
| 4,4-二羟基丁醛 | 4,4-Dihydroxybutyraldehyde | 84000-90-8 | C4H8O3 |
| 4,4-二硝基-1,7-二苯基-庚烷-1,7-二酮 | 4,4-dinitro-1,7-diphenyl-heptane-1,7-dione | 102174-85-6 | C19H18N2O6 |
| 4,4-二甲氧基环己烯 | 4,4-Dimethoxycyclohexen | 16831-48-4 | C8H14O2 |
| 4,4-二甲氧基四氢-4H-吡喃 | 4,4-dimethoxytetrahydro-4H-pyran | 28218-71-5 | C7H14O3 |
| 4,4-二甲氧基四氢-3-呋喃胺 | 3,3-Dimethoxy-4-amino-tetrahydrofuran | 215940-72-0 | C6H13NO3 |
| 4,4-二甲氧基四氢-2H-吡喃-3-醇 | 4,4-dimethoxytetrahydro-2H-pyran-3-ol | 104681-92-7 | C7H14O4 |