| CAS编号 | 中文名 | 英文名 | 分子式 | 分子量 | 熔点 | 沸点 |
| 420-26-8 | | 2-fluoropropane | C3H7F | 62.09 | | |
| 420-32-6 | | thiocarbonyl difluoride | CF2S | 82.07 | | |
| 420-33-7 | | carbamyl fluoride | CH2FNO | 63.03 | | |
| 420-34-8 | | methyldifluorosilane | CH4F2Si | 82.12 | | |
| 420-37-1 | 三甲基四氟硼酸锇 | trimethyl-oxoniu tetrafluoroborate(1-) | | | | |
| 420-44-0 | | 2-Chloro-2-fluoropropane | C3H6ClF | 96.53 | | |
| 420-45-1 | | 2,2-difluoropropane | C3H6F2 | 80.08 | | |
| 420-46-2 | 1,1,1-三氟乙烷 | 1,1,1-trifluoro-Ethane | C2H3F3 | 84.04 | | |
| 420-48-4 | | dichlorofluoroiodo-methane | CCl2FI | 228.82 | | |
| 420-52-0 | | (trifluoromethyl)phosphine | CH2F3P | 102.00 | | |
| 420-56-4 | | fluorotrimethyl-silan | C3H9FSi | 92.19 | | 16℃ |
| 420-58-6 | | dichlorofluoro-methylsilane | CH3Cl2FSi | 133.02 | | |
| 420-64-4 | | methyltetrafluorophosphorane | CH3F4P | 122.00 | | 11℃ |
| 420-67-7 | | (difluoromethyl)-sulfur pentafluoride | CHF7S | 178.07 | | |
| 420-87-1 | | 2,2,2-trifluoro-ethano sodium salt | | | | |
| 420-90-6 | | 3-bromo-3,3-difluoropropene | C3H3BrF2 | 156.96 | | |
| 420-97-3 | | 1,2-dichloro-2-fluoro-propane | C3H5Cl2F | 130.98 | | |
| 420-99-5 | | 1-chloro-2,2-difluoro-propane | C3H5ClF2 | 114.52 | | |
| 4200-06-0 | | 1-Ethynyl-4-phenoxybenzene | | 194.23 | | 90-95 ℃0.4 mm Hg(lit.) |
| 4200-46-8 | 2-(1h-咪唑-5-基)乙酸甲酯 | methyl 2-(1h-imidazol-5-yl)acetate | | | | |
| 4200-55-9 | | phosphoric acid, tris(decyl) ester | C30H63O4P | 518.79 | | |
| 4200-61-7 | | levulinic acid, 4-(didodecyl mercaptole) | | | | |
| 4200-91-3 | | 3-hexadecyldihydro-5-furandione | | | | |
| 4200-92-4 | | dihydro-3-octyl-5-furandione | | | | |
| 4200-95-7 | | 1-heptadecanamine | C17H37N | 255.48 | | |
| 42001-44-5 | | 2-(2,6-dichlorophenoxy)ethanol | | | | |
| 42002-05-1 | | n-t-boc-l-histidine hydrazide*crystalline | C11H19N5O3 | 269.30 | | |
| 42002-18-6 | | boc-asn-osu | C13HN3O7 | 311.16 | | |
| 42003-39-4 | | 2,8,9-trioxa-5-aza-1-silabicyclo(3.3.3)undecane, 1-(chloromethyl) | C7H14ClNO3Si | 223.73 | 221-2℃ | |
| 42003-88-3 | | ethyl 2-cyanoethanimidoate | | | | |
| 42007-12-5 | | Decanol-d | C10H19D3O | 161.30 | | |
| 42007-73-8 | | 2,7-dimethyl-octan-2-ol | C10H22O | 158.28 | | |
| 420089-51-6 | | thiophene-2 | | | | |
| 420092-67-7 | n-(4-溴-2-氟苯基)-2-甲氧基苯甲酰胺 | n-(4-bromo-2-fluorophenyl)-2-methoxybenzamide | | | | |
| 420092-79-1 | | sw155246 | | | | |
| 420095-57-4 | | 2-(2-methoxy-4-methylphenoxy)acetohydrazide | | | | |
| 420095-74-5 | α-ketoisovaleric acid-13c5,3-d sodium salt | 2-keto-3-methylbutyric acid-13c5,3-d sodium salt | | | | |
| 4201-22-3 | | tolonidine | | | | |
| 4201-58-5 | | n-palmitoylsphingosine | | | | |
| 4201-62-1 | | d-lactosyl--1,1' n-palmitoyl-d-erythro-sphingosine | | | | |
| 420100-59-0 | | (2-methoxyethyl)[2-(2-naphthyloxy)ethyl]amine hydrochloride | | | | |
| 420101-13-9 | | 3-(1,3-dioxo-1,3-dihydro-2h-isoindol-2-yl)-4-methylbenzoic acid | | | | |
| 420102-20-1 | | 3-hydrazino-5h-[1,2,4]triazino[5,6-b]indole | | | | |
| 420102-44-9 | | 2-(2-fluorophenoxy)-n-(2-methoxyethyl)ethanamine | | | | |
| 420104-03-6 | | 2-{[2-(3-methoxyphenoxy)ethyl]amino}ethanol hydrochloride | | | | |
| 420104-73-0 | | [2-(4-chlorophenoxy)ethyl](2-methoxyethyl)amine hydrochloride | | | | |
| 420109-43-9 | | (z)-3-(3,3,3-trifluoro-2-oxopropylidene)isobenzofuran-1(3h)-one | | | | |
| 42011-48-3 | | n-(4-(5-nitro-2-furyl)-2-thiazolyl)-2,2,2-trifluoro-acetamid | | | | |
| 420110-45-8 | | (2R)-2-amino-2-(4-hydroxyphenyl)ethan-1-ol | | | | |
| 420118-03-2 | | 4,6-o-benzylidene-n-acetyl-d-galactosamine | | | | |
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