| CAS编号 | 中文名 | 英文名 | 分子式 | 分子量 | 熔点 | 沸点 |
| 42498-32-8 | n-叔丁基-4-甲基苯甲酰胺 | n-tert-butyl-4-methylbenzamide | | | | |
| 42498-33-9 | n-叔丁基-3-甲基苯甲酰胺 | n-tert-butyl-3-methylbenzamide | | | | |
| 42498-38-4 | 4-溴-n-叔丁基苯甲酰胺 | 4-bromo-n-tert-butylbenzamide | C11H14BrNO | 256.14 | 134.98 °C | 350.5 °C at 760 mmHg |
| 42498-39-5 | | 3-bromo-n-(tert-butyl)benzamide | | | | |
| 42498-40-8 | n-叔丁基-4-氯苯甲酰胺 | n-tert-butyl-4-chlorobenzamide | | | | |
| 42498-44-2 | 联苯-3-甲酰氯 | biphenyl-3-carbonyl chloride | | | | |
| 42498-58-8 | | epoxy hardener zzla-0334 | | | | |
| 42499-04-7 | | 2-propenal, homopolymer, compd. with sodium hydrogen sulfite | | | | |
| 42499-14-9 | | n-(3-chlorophenyl)-picrylamine | | | | |
| 425-11-6 | | 1-chloro-1,2-dinitro-1,2,2-trifluoro-ethan | | | | |
| 425-38-7 | | 2,2,3,3-tetrafluoro-3-(trifluoromethoxy)-propionyl fluorid | | | | |
| 425-51-4 | | 6-diene-3,20-dione, 17-hydroxy-pregna- acetate (ester) | | | | |
| 425-61-6 | 2,2,3,3-四氟-1,4-丁烷二醇 | 1,4-Dihydroxy-2,2,3,3-tetrafluorobutane | C4H6F4O2 | 162.08 | 85-87℃ | 10-112℃( |
| 425-75-2 | 三氟甲烷磺酸酸乙酯 | Ethyl triflate | C3H5F3O3S | 178.13 | | 115 °C(lit.) |
| 425-87-6 | | ether, 2-chloro-1,1,2-trifluoroethyl methyl | C3H4ClF3O | 148.51 | | 70°C(lit.) |
| 425-88-7 | | methyl 1,1,2,2-tetrafluoroethyl ether | C3H4F4O | 132.06 | -107 °C | 33℃ |
| 425-99-0 | | 2,2-difluoromalonamide | C3H4F2N2O2 | 138.07 | 206-207℃ | 433.9±45.0 °C(Predicted) |
| 4250-38-8 | | nonacosanoic acid | C29H58O2 | 438.77 | 88-92°C | |
| 4250-45-7 | | Borane,dichloro-p-tolyl- | C7H7BCl2 | 172.85 | | |
| 4250-46-8 | | Borane,dichloro(p-chlorophenyl)- | C6H4BCl3 | 193.27 | | |
| 4250-77-5 | 6-羟基黄烷酮 | 6-hydroxyflavanone | C15H12O3 | 240.26 | 220-222℃ | |
| 4250-81-1 | 1-苯基-1-戊炔 | Phenyl n-propyl acetylene | C11H12 | 144.21 | | |
| 42504-43-8 | | pyridyl-indandion | | | | |
| 42504-46-1 | 十二烷基苯磺酸与1-氨基-2-丙醇(1:1)的化合物 | Benzenesulfonic acid,dodecyl-,compd. with 1-amino-2-propanol(1:1) | C18H30O3S·C3H9NO | | | |
| 42504-87-0 | | isobutylhydrazine | | | | |
| 42505-71-5 | | n,n-dimethyl-3-thieno(3,2-c)(2)benzothiepin-10(5h)-ylidene-1-propanamin hyd | | | | |
| 42505-74-8 | | 1-propanamine, n,n-dimethyl-3-thieno(2,3-c)(2)benzothiepin-4(9h)-ylidene, hydro | | | | |
| 42505-76-0 | | n,n-dimethyl-3-thieno(2,3-c)(2)benzothiepin-4(9h)-ylidene-1-propanamin hydr | | | | |
| 42505-78-2 | | n-methyl-3-thieno(2,3-c)(2)benzothiepin-4(9h)-ylidene-1-propanamin hydrochl | | | | |
| 42505-79-3 | | 1-(8-chloro-10,11-dihydrodibenzo(b,f)thiepin-10-yl)-4-methyl-piperazin meth | | | | |
| 42505-86-2 | | n,n-dimethyl-3-thieno(2,3-c)(2)benzothiepin-4(9h)-ylidene-1-propanamin 10-o | | | | |
| 42506-03-6 | | Pixyl chloride | C19H13ClO | 292.7589 | 102-106℃ | 387.1 °C at 760 mmHg |
| 42506-67-2 | | 2,6-diphenyl-4-pyridinecarboxylic anhydride | | | | |
| 42507-55-1 | | 4,5-dimethyl-2-(2-methyl-1-propenyl)-3-cyclohexene-1-carboxaldehyd (1 alpha | | | | |
| 42507-56-2 | | ,2 beta,5 alpha)- | | | | |
| 42507-57-3 | | ,2 alpha,5 beta)- | | | | |
| 42507-58-4 | | ,2 alpha,5 alpha)- | | | | |
| 42507-82-4 | | (4as,4br,8as)-2,2-dimethyl-1,2,3,4,4a,4b,8a,9- octahydro-1,3-methanophenanthrene-5,8-dione | C17H20O2 | 256.34 | | |
| 42508-16-7 | | carbamic acid, (4-propoxyphenyl)-, 2-(diethylamino)-1-methylethyl ester, monohy | | | | |
| 42508-17-8 | | carbamic acid, (4-butoxyphenyl)-, 2-(diethylamino)-1-methylethyl ester, monohyd | | | | |
| 42508-60-1 | | 1-acetonylpyridinium chloride | C8H10NO | 136.17 | | |
| 42508-74-7 | (4-甲基-吡啶-2-基)-甲醇 | (4-methylpyridin-2-yl)methanol | C7H9NO | 123.15 | | 236°C |
| 42508-80-5 | 1-(4-甲基吡啶-2-基)丙酮 | 1-(4-methylpyridin-2-yl)acetone | | | | |
| 42509-62-6 | | 4-triazol-3-one, 5-chloro-1,2-dihydro-1-(1-methylethyl)-3h-2 | | | | |
| 42509-80-8 | 支撑,加固,永久工作台 | Isazophos(BSI,ISO,ANSI) | C9H17ClN3O3PS | 313.74 | | |
| 42509-83-1 | | isazophos-methyl | | | | |
| 4251-01-8 | N,N'-二(1-甲基乙基)-1,4-苯二胺 | 4-Benzenediamine, N,N'-bis(1-methylethyl)-1 | C12H20N2 | 192.3 | | |
| 4251-08-5 | | 1-(3-chlorophenyl)-3-phenyl-2-thiourea | C13H11ClN2S | 262.76 | | |
| 4251-13-2 | | cyclohexyl thiocyanate | | | | |
| 4251-16-5 | | thiocyanato-propane | C4H7NS | 101.17 | | |
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