| CAS编号 | 中文名 | 英文名 | 分子式 | 分子量 | 熔点 | 沸点 |
| 421-21-6 | | Silane,(chloromethyl)fluorodimethyl- | C3H8ClFSi | 126.63 | | |
| 421-22-7 | | dichloroethylfluoro-silane | C2H5Cl2FSi | 147.05 | | |
| 421-24-9 | | ethenyltrifluorosilane | C2H3F3Si | 112.13 | | |
| 421-32-9 | | dichloro(trifluoro-methyl)arsine | CAsCl2F3 | 214.83 | | |
| 421-33-0 | | 1,2-dibromo-1,2-dichlorofluoroethane | C2HBr2Cl2F | 274.74 | | |
| 421-36-3 | | 1,2-dibromo-1-chloro-2,2-difluoroethane | C2HBr2ClF2 | 258.3 | | 120℃ |
| 421-47-6 | | 2-chloro-1,1,1-trifluoropropane | C3H4ClF3 | 132.51 | | |
| 421-48-7 | | propane,1,1,1,2-tetrafluoro- | C3H4F4 | 116.06 | | |
| 421-49-8 | 1,1,1-三氟丙-2-胺 | 1,1,1-trifluoropropan-2-amine | | | | |
| 421-50-1 | 1,1,1-三氟丙酮 | 1,1,1-trifluoro-2-propanon | C3H3F3O | 112.05 | -78-78℃ | 22℃ |
| 421-52-3 | 2,2,2-三氟乙硫基酰胺 | 2,2,2-trifluoroethanethioamide | | | | |
| 421-53-4 | | 2,2,2-trifluoro-1-ethanediol | C2H3F3O2 | 116.04 | | 104℃ |
| 421-58-9 | | Dichlorotrifluoromethyl phosphine | CCl2F3P | 170.89 | | |
| 421-59-0 | | diiodo-trifluoromethyl-phosphine | CF3I2P | 353.79 | | |
| 421-69-2 | | 1,2-dibromo-1,2-dichlorodifluoroethane | C2Br2Cl2F2 | 292.73 | | |
| 421-70-5 | | 1-bromo-2-iodotetrafluoroethane | C2BrF4I | 306.83 | | 78℃ |
| 421-75-0 | | 1-chloro-1,1,2,2-tetrafluoro-propane | C3H3ClF4 | 150.50 | | |
| 421-78-3 | | 1-chloro-2-iodotetrafluoroethane | C2ClF4I | 262.37 | | 56℃ |
| 421-82-9 | | methyl trifluoromethyl sulfone | C2H3F3O2S | 148.10 | | |
| 421-83-0 | 三氟甲磺酰氯 | Trifluoromethanesulfonyl chloride | CClF3O2S | 168.52 | | 29-32℃ |
| 421-85-2 | | Trifluoromethanesulfonamide | CH2F3NO2S | 149.09 | | |
| 421-94-3 | | 1,1,1,2,3-pentachloro-2-fluoro-propane | C3H2Cl5F | 234.31 | | |
| 4210-03-1 | 2,6-二氯茴香硫醚 | 2,6-dichlorothioanisole | | | | |
| 4210-04-2 | | 3,5-bis(trifluoromethyl)phenylmethylsulfone | | | | |
| 4210-05-3 | | 2,6-dichlorophenylmethylsulfone | | | | |
| 4210-32-6 | 4-叔丁基苄腈 | 4-tert-butylbenzonitrile | C11H13N | 159.23 | | 258℃ |
| 4210-59-7 | | 2,6-diphenyl-4-tert-butylpyrylium perchlorate | | | | |
| 4210-60-0 | 叔丁基丙二腈 | tert-butylmalononitrile | | | | |
| 4210-66-6 | | o-phosphohomoserine | | | | |
| 4210-71-3 | | (4-chlorophenoxy)-acetic aci 2-(dimethylamino)propyl ester | | | | |
| 4210-73-5 | | (p-chlorophenoxy)-acetic aci 2-(diethylamino)ethyl ester | | | | |
| 4210-74-6 | | acetic acid, (p-chlorophenoxy)-, 2-(diethylamino)ethyl ester, hydrochloride | | | | |
| 4210-90-6 | | n,n,n',n'-tetrakis[4-(dipropylamino)phenyl]-4-benzenediamne | | | | |
| 4210-91-7 | | phenanthridinium, 8-(acetylamino)-3-(3-(3-(aminoiminomethyl)phenyl)-1-triazenyl | | | | |
| 4210-92-8 | | 3-amino-8-(3-(3-(((aminoiminomethyl)hydrazono)methyl)phenyl)-phenanthridiniu | | | | |
| 4210-97-3 | | tiformin | | | | |
| 42101-38-2 | | 3,3-dichloro-2-methyl-but-1-ene | C5H8Cl2 | 139.02 | | |
| 42101-49-5 | | propan-2-oneO-ethyloxime | C5H11NO | 101.15 | | |
| 42101-55-3 | | 3,3'-hexamethylenebis(1,1-dibenzylurea) | | | | |
| 42103-98-0 | | isopropylidenesuccinicaciddiethylester | | | | |
| 42104-58-5 | 邻二甲苯二膦酸 | o-xylylenediphosphonic acid | | | | |
| 42105-26-0 | 1-甲基-2-丙炔胺盐酸盐 | but-3-yn-2-amine hydrochloride | | | | |
| 42105-34-0 | | 3-trifluoromethylsulfanyl-pentane-2,4-dione | | | | |
| 42105-37-3 | | 3-oxo-2-(trifluoromethylthio)butyric acid ethylester | | | | |
| 42105-98-6 | | n-methylmalonamic acid | | | | |
| 42106-48-9 | 2-(4-吗啉基)苯甲酸 | 2-morpholinobenzoic acid | | | | |
| 42106-50-3 | | 5-nitro-2-(piperidine-1-yl)benzoic acid | | | | |
| 42106-58-1 | | n-(2-phenoxyethyl)-n-phenyl-acetamid | | | | |
| 42107-66-4 | | 6-phenoxy-1-phenyl-4-hexadiyn-1-one | | | | |
| 4211-06-7 | | 1,2-dihydro-4-(p-(2,3-epoxypropoxy)phenyl)-7-methoxy-3-phenyl-naphthalen | | | | |
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