| CAS编号 | 中文名 | 英文名 | 分子式 | 分子量 | 熔点 | 沸点 |
| 203934-60-5 | 2-叔丁基3-乙基2,8-二氮杂螺[4.5]癸烷-3,8-二羧酸酯 | 8-tert-butyl 3-ethyl 2,8-diazaspiro[4.5]decane-3,8-dicarboxylate | C16H28N2O4 | 312.41 | | |
| 203935-39-1 | | helioxanthin derivative 5-4-2 | C20H13NO5 | 347.32 | | |
| 203937-50-2 | | 4-methoxyindole-3-carboxylic acid | C10H9NO3 | 191.18 | | 447.6±25.0 °C(Predicted) |
| 2039401-45-9 | 1-(4-aminopiperidin-1-yl)-2-(pyridin-4-ylthio)ethan-1-one | | C12H17N3OS | 251.35 | | |
| 203941-94-0 | (R)-1-n-boc-3-甲氨基哌啶 | (R)-1-n-boc-3-methylaminopiperidine | C11H22N2O2 | 214.305 | | |
| 2039433-41-3 | | 5-(piperidin-4-yl)-3-(pyridin-4-yl)-1,2,4-oxadiazole hydrochloride | C12H15ClN4O | 266.7267 | | |
| 203945-19-1 | | bub1b, active, gst tagged human | | | | |
| 20395-16-8 | 1-环氧乙烷基甲基-3,5-二-2-丙烯基-1,3,5-三嗪-2,4,6(1H,3H,5H)-三酮 | 1,3,5-Triazine-2,4,6(1H,3H,5H)-trione,1-(oxiranylmethyl)-3,5-di-2-propenyl- | | | | |
| 20395-17-9 | | phosphonothioic acid, ethyl-, s,s'-(thiodimethylene) o,o'-diethyl ester | | | | |
| 20395-19-1 | | 3-ethyl-1,2-heptadiene | C9H16 | 124.22 | | |
| 20395-24-8 | | 1,1-dichlorooctane | C8H16Cl2 | 183.12 | | |
| 20395-25-9 | | 1,1,3-trichloro-propane | C3H5Cl3 | 147.43 | | |
| 20395-28-2 | 5-氯乙酸苯酯 | 1-Acetoxy-5-chloropentane | C7H13ClO2 | 164.63 | | 96-95℃(1 |
| 20395-56-6 | | heptyltrimethyl-ammoniu iodide | | | | |
| 20395-57-7 | | chlorotri(methyl-d3)-silan | | | | |
| 20395-87-3 | | cbz-2-aminobutyric acid | | | | |
| 20396-54-7 | | peroxide, 1,1-dimethylethyl ethyl | | | | |
| 20396-66-1 | | Diborane(6)-d6 | B2D6 | 33.71 | | |
| 20398-06-5 | | ethanol, thallium(1+) salt | | | | |
| 20398-34-9 | | adenosine 5'-diphosphate sodium*from bacterial so | C10H15N5O10P2 | 427.20 | | |
| 20398-76-9 | | 4-diimine, n,n'-dibromo-5-cyclohexadiene-1 | | | | |
| 20399-13-7 | | dihydrostreptose | | | | |
| 204-02-4 | | perimidine | C11H8N2 | 168.19 | | |
| 204-03-5 | 1H-萘并[1,8-de][1,2,3]三嗪 | 1H-Naphtho[1,8-de][1,2,3]triazine | C10H7N3 | 169.18 | | |
| 2040-00-8 | 二乙基碘化铝 | Aluminum,diethyliodo- | 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℃ | 144-145℃(Press: 8 Torr) |
| 2040-04-2 | 2,6-二甲氧基苯乙酮 | 2',6'-Dimethoxyacetophenone | C10H12O3 | 180.2 | 68-70°C (Lit.) | 135-136°C 2mm Hg (Lit.) |
| 2040-05-3 | 2',6'-二氯苯乙酮 | 2',6'-Dichloroacetophenone | C8H6Cl2O | 189.04 | 37-41 °C(lit.) | 176-180°C 83mm |
| 2040-07-5 | 2,4,5-三甲基苯乙酮 | 1-(2,4,5-trimethyl-phenyl)-ethanone | 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 | 204.31 | 47-48℃ | 150℃(20 |
| 2040-14-4 | | 2'-methylpropiophenone | C10H12O | 148.20 | | 219.5°C at 760 mmHg |
| 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 | | | | |
| 2040-70-2 | 乙酸二氰甲酯 | Dicyanomethyl acetate | C5H4N2O2 | 124.10 | 65 °C | 258.1±20.0 °C(Predicted) |
| 2040-73-5 | | [18]Annulene | C18H18 | 234.34 | | |
| 2040-76-8 | 苯基氨基甲酰氯 | Phenylcarbamic chloride | | | | |
| 2040-83-7 | | Phenol,2,4-dichloro-6-iodo- | C6H3Cl2IO | 288.90 | | |
| 2040-86-0 | 2-溴-6-碘苯酚 | 2-Bromo-6-iodophenol | C6H4BrIO | 298.910 | 63 °C | 214.4±25.0 °C |
| 2040-88-2 | 2-溴-6-氯苯酚 | 2-bromo-6-chlorophenol | C6H4BrClO | 207.45 | | 204.6°C |
| 2040-89-3 | 2-溴-6-氟苯酚 | 2-bromo-6-fluorophenol | C6H4BrFO | 191 | | 173°C |
| 2040-90-6 | 2-氯-6-氟苯酚 | 2-chloro-6-fluorophenol | C6H4ClFO | 146.54 | 63-64℃ | |
| 2040-95-1 | | butyl-cyclopentane | C9H18 | 126.24 | | |
| 2040-96-2 | | propyl-cyclopentane | C8H16 | 112.21 | | |
| 20400-73-1 | 2,5-Pyrrolidinedione, 3-hydroxy-1-phenyl- | | C10H9NO3 | 191.18 | 184 °C | 472.3±38.0 °C(Predicted) |
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