| CAS编号 | 中文名 | 英文名 | 分子式 | 分子量 | 熔点 | 沸点 |
| 201990-24-1 | | (1,1-dioxo-2,3-dihydro-1 h -thiophen-3-ylamino)-acetic acid | | | | |
| 201990-40-1 | | 4'-chloro-3'-methyl-2-phenylacetophenone | | | | |
| 201991-24-4 | | 1-boc-2-acetyl-piperidine | | | | |
| 201992-85-0 | 2-(6-甲基嘧啶-4-基)乙酸乙酯 | ethyl 2-(6-methylpyrimidin-4-yl)acetate | | | | |
| 201994-57-2 | | h-hyp-betana hcl | | | | |
| 201996-20-5 | 丙酸钠-2,3-13c2 | sodium propionate-2,3-13c2 | | | | |
| 201996-24-9 | | 3-amino-n-(4-methoxy-phenyl)-benzenesulfonamide | | | | |
| 201996-37-4 | 氰尿酸-13c3 | cyanuric acid-13c3 | | | | |
| 2019997-40-9 | 呋喃并[3,2-b]吡啶-2-硼酸 频哪醇酯 | furo[3,2-b]pyridine-2-boronic acid pinacol ester | | | | |
| 202-03-9 | | aceanthrylene | | | | |
| 202-22-2 | | 128353-39-9 | | | | |
| 202-33-5 | | benz(j)aceanthrylene | | | | |
| 202-94-8 | | 11h-benz(bc)aceanthrylene | | | | |
| 202-98-2 | | 4h-cyclopenta(def)chrysene | | | | |
| 2020-28-2 | | pyrrolidineacetic acid, 2,6-xylyl ester, hydrochloride | | | | |
| 2020-50-0 | | acetic acid 2-(2-hydroxy-ethylsulfanyl)-ethyl ester | C6H12O3S | 164.22 | | |
| 2020-73-7 | | 1-(2,4,5-trimethoxyphenyl)-1-butanone | | | | |
| 2020-97-5 | | acetamide, 2,2'-methylenebis((3-methoxy-5-propyl-o-phenylene)oxy)bis(n,n-diethy | | | | |
| 2020-98-6 | | 2-((4-allyl-6-methoxy-alpha-morpholino-o-tolyl)oxy)-n,n-diethyl-acetamid | | | | |
| 2020-99-7 | | 2-((4-allyl-6-methoxy-alpha-piperidino-o-tolyl)oxy)-n,n-diethyl-acetamid | | | | |
| 20200-22-0 | | n-methyl-2-nitro-4-(trifluoromethyl)-benzenamin | | | | |
| 20200-59-3 | | 5-methoxy-1,3,3-trimethylspiro(indoline-2,3'- (3h) | | | 152-154℃ | |
| 20200-62-8 | | 6,8-dibromo-1',3'-dihydro-1',3',3'-tri-me- spiro(2 | | | 118-120℃ | |
| 20200-64-0 | | spiro[2h-1-benzopyran-2,2'-[2h]indole], 1',3'-dihydro-1',3',3'-trimethyl-6,8-di | | | | |
| 202000-99-5 | 3-溴-5-氟苯乙酸 | 3-bromo-5-fluorophenylaceticacid | | | | |
| 2020003-64-7 | 3-溴-1h-噻吩并[3,2-c]吡唑-5-羧酸甲酯 | methyl 3-bromo-1h-thieno[3,2-c]pyrazole-5-carboxylate | | | | |
| 202001-00-1 | 3-氯-5-氟苯乙酸 | 3-chloro-5-fluorophenylacetic acid | | | | |
| 202001-20-5 | | methyl 3-amino-3-cyclohexylpropanoate hcl | | | | |
| 202002-66-2 | | 4-piperidinylacetonitrile | | | | |
| 202003-06-3 | 4-氰基-1-(2,6-二氟苄基)-1h-1,2,3-三氮唑 | 1-(2,6-difluorobenzyl)-1h-1,2,3-triazole-4-carbonitrile | | | | |
| 202009-64-1 | | PAMAM DENDRIMER, GENERATION 1.5, 20 WT.% SOLUTION IN METHYL ALCOHOL | | | | |
| 202009-65-2 | | PAMAM DENDRIMER, GENERATION 2.5, 10 WT.% SOLUTION IN METHYL ALCOHOL | | | | |
| 202009-66-3 | | PAMAM DENDRIMER, GENERATION 4.5, 5 WT.% SOLUTION IN METHYL ALCOHOL | | | | |
| 202009-67-4 | | pamam dendrimer, generation 5.5 solution | | | | |
| 20201-03-0 | 2-氯-4-硝基苯磺酰氯 | 2-chloro-4-nitrobenzene-1-sulfonyl chloride | | | | |
| 20201-05-2 | | 2-chloro-5-nitrophenyl disulfide | | | | |
| 20201-24-5 | 3-甲基-2-氧代丁酰乙酯 | ethyl 3-methyl-2-oxobutyrate | C7H12O3 | 144.17 | | 62℃(11 t |
| 20201-26-7 | 4-溴苯乙醛酸乙酯 | Ethyl 2-(4-bromophenyl)-2-oxoacetate | | | | |
| 20201-60-9 | | 2-methoxy-4-(5,6,6-trimethylbicyclo[2.2.1]hept-2-yl)-pheno | | | | |
| 20201-72-3 | | 2-methoxy-5-(5,6,6-trimethyl-2-norbornyl)-pheno | | | | |
| 20201-75-6 | | 2-methoxy-6-(5,6,6-trimethyl-2-norbornyl)-pheno | | | | |
| 20202-48-6 | | Acetic acid,trichloro-,potassium salt(2:1) | C4HCl6KO4 | 364.86 | | |
| 20202-49-7 | | Acetic acid,trichloro-,ammonium salt(2:1) | C4H5Cl6NO4 | 343.80 | | |
| 20202-50-0 | | Acetic acid-d,trichloro-,potassium salt(2:1) | C4Cl6DKO4 | 365.87 | | |
| 20202-51-1 | | Acetic acid-d,trichloro-,ammonium-d4Salt(2:1) | C4Cl6D5NO4 | 348.84 | | |
| 20202-54-4 | 三碘化铯 | | | | | |
| 20202-81-7 | | phosphoric acid, 2,2-dichlorovinyl dihexyl ester | | | | |
| 20202-93-1 | | phosphoric acid, 2,2-dichlorovinyl dipentyl ester | | | | |
| 20203-47-8 | | chromic acid (h2cro4), compd. with cyclohexanamine (1:1) | | | | |
| 20204-43-7 | | 2-hexadecyl-2-thio-pseudoure hydriodide | | | | |
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