| CAS编号 | 中文名 | 英文名 | 分子式 | 分子量 | 熔点 | 沸点 |
| 2040-00-8 | 二乙基碘化铝 | diethyliodo-aluminu | C4H10AlI | 212.01 | | |
| 2040-01-9 | 2,3,4,5,6-五甲基苯乙酮 | 2',3',4',5',6'-pentamethylacetophenone | C13H18O | 190.28 | 82-84℃ | |
| 2040-04-2 | 2,6-二甲氧基苯乙酮 | 2',6'-dimethoxy-acetophenon | | | | |
| 2040-05-3 | 2',6'-二氯苯乙酮 | 2,6-dichloroacetophenone | C8H6Cl2O | 189.04 | | |
| 2040-07-5 | 2,4,5-三甲基苯乙酮 | 2',4',5'-trimethylacetophenone | C11H14O | 162.23 | 10-11℃ | |
| 2040-10-0 | 1-[4-(1,1-二甲基乙基)-2,6-二甲基苯基]乙烯酮 | 1-[4-(1,1-dimethylethyl)-2,6-dimethylphenyl]-Ethanone | C14H20O | | 47-48℃ | 150℃(20 |
| 2040-14-4 | | 2'-methylpropiophenone | | | | |
| 2040-15-5 | | 2',4',6'-trimethylpropiophenone | | | | |
| 2040-20-2 | | 1-(4-methoxy-phenyl)-2-methyl-propan-1-one | C11H14O2 | 178.23 | | |
| 2040-21-3 | | 2-methyl-1-(2-methylphenyl)-1-propanone | | | | |
| 2040-22-4 | | 2,2',4',6'-tetramethylpropiophenone | | | | |
| 2040-26-8 | | 2,2-dimethyl-4'-methoxypropiophenone | | | | |
| 2040-46-2 | | Benzenamine,2,3,4,5,6-pentachloro-N-methyl- | C7H4Cl5N | 279.38 | | |
| 2040-52-0 | | bis[ethanedioato(2-)-o,o']-thoriu | | | | |
| 2040-64-4 | | tetradecanoic acid, dodecyl ester | | | | |
| 2040-73-5 | | [18]Annulene | C18H18 | 234.34 | | |
| 2040-83-7 | | Phenol,2,4-dichloro-6-iodo- | C6H3Cl2IO | 288.90 | | |
| 2040-88-2 | 2-溴-6-氯苯酚 | 2-bromo-6-chlorophenol | | | | |
| 2040-89-3 | 2-溴-6-氟苯酚 | 2-bromo-6-fluorophenol | | | | |
| 2040-90-6 | 2-氯-6-氟苯酚 | 2-chloro-6-fluorophenol | C6H4ClFO | 146.54 | 63-64℃ | |
| 2040-95-1 | | butylcyclopentane | C9H18 | 126.24 | | |
| 2040-96-2 | | propyl-cyclopentan | C8H16 | 112.21 | | |
| 204003-85-0 | 3-((4,5,6,7-四氢-1h-吲哚-2-基)亚甲基)二氢吲哚-2-酮 | 3-((4,5,6,7-tetrahydro-1h-indol-2-yl)methylene)indolin-2-one | | | | |
| 204005-46-9 | 1,3-二氢-3-[(3,5-二甲基-1h-吡咯-2-基)亚甲基]-2h-吲哚-2-酮 | su 5416 | | | | |
| 2040055-81-8 | | pf-04363467 hydrochloride | | | | |
| 204008-22-0 | 1-乙基-4-辛基苯 | 1-ethyl-4-octylbenzene | | | | |
| 20401-88-1 | 3-(4-甲氧基苯基)丙醛 | 3-(4-methoxyphenyl)propionaldehyde | | | | |
| 20401-90-5 | | 3-indolepropionic acid hydrazide | | | | |
| 204013-06-9 | 1-(2,4-二氟苄基)哌嗪 | 1-(2,4-difluorobenzyl)piperazine | | | | |
| 204013-09-2 | | 4-(3,4-difluorophenoxy)piperidine hcl | | | | |
| 2040291-27-6 | (R)-5′-phenyl-7-deazaadenosine; 6-amino-9-[(R)-5′-phenyl(ribofuranosyl)]-7-deazapurine | lly-283 | | | | |
| 20403-06-9 | | samarium hydroxide (sm(oh)3) | | | | |
| 20403-41-2 | | tetradecanoic acid, lead salt | | | | |
| 20403-61-6 | | etyl-2,6- dideoxy-beta-d-ribo-hexopyranosyl-(1-4)-3-acetyl-2,6-dideoxy-beta-d-r | | | | |
| 20404-94-8 | | ether, methyl 1,2-dibromoheptafluoroisobutyl | | | | |
| 20404-97-1 | | 4'-(2-nitro-1-(p-tolylthio)ethyl)-acetanilid | | | | |
| 20405-19-0 | | acetic acid, ((4-chloro-o-tolyl)oxy)-, compd. with 2,2'-iminodiethanol (1:1) | | | | |
| 20405-60-1 | 乙酸-2-甲基-5-(1-甲基乙烯基)环己酯 | Cyclohexanol, 2-methyl-5-(1-methylethenyl)-, acetate | C12H20O2 | 196.28 | | |
| 20405-64-5 | | copper selenide (cu2Se) | | | | |
| 20406-60-4 | | mipimazole | | | | |
| 20406-74-0 | | n-methyl-2-propyl-valeramid | | | | |
| 20406-75-1 | | n,n-diethyl-2-propyl-valeramid | | | | |
| 20406-77-3 | | n-(1-naphthyl)-2-propyl-valeramid | | | | |
| 204063-33-2 | β-丙氨酸二苯基甲基胺乙酰氧基酯三氟乙酸盐 | | | | | |
| 204064-81-3 | | 4-[2-(benzhydryloxy)ethyl]piperidine | | | | |
| 204067-32-3 | 1-(2-吡啶基)环己烷甲腈 | 1-(pyridin-2-yl)cyclohexanecarbonitrile | | | | |
| 204067-34-5 | 2-(5-甲氧基吡啶-2-基)乙腈 | 2-(5-methoxypyridin-2-yl)acetonitrile | | | | |
| 204067-74-3 | | (3-[2-methyl-2-(thiophen-3-ylmethoxy)-propoxy]-phenyl)-methanol | | | | |
| 20407-84-5 | | (e)-2-dodecena | | | | |
| 204070-00-8 | (S)-2-((叔丁氧羰基)氨基)-5-胍基戊酸盐酸盐水合物 | boc-arg hcl h2o | | | | |
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