| CAS编号 | 中文名 | 英文名 | 分子式 | 分子量 | 熔点 | 沸点 |
| 2051-53-8 | | methylisopropylaniline | C10H15N | 149.23 | | |
| 2051-55-0 | | 5-isopropenyl-2-methyl-cyclohex-2-enone oxime | | | | |
| 2051-59-4 | | 6-chloro-coumari | | | | |
| 2051-60-7 | | 2-chloro-bipheny | C12H9Cl | 188.65 | | |
| 2051-61-8 | | 3-chloro-1'-biphenyl | C12H9Cl | 188.65 | | |
| 2051-62-9 | 4-氯-1,1'-联苯 | 1'-Biphenyl, 4-chloro-1 | C12H9Cl | 188.65 | | |
| 2051-65-2 | | 5-chloro-2-hydroxybenzenesulphonic acid | | | | |
| 2051-76-5 | 丙烯酸酐 | acrylic anhydride | C6H6O3 | 126.11 | | |
| 2051-78-7 | | butyric acid, allyl ester | C7H12O2 | 128.17 | | |
| 2051-79-8 | N,N-二乙基-2-甲基-1,4-苯二胺盐酸盐 | 1,4-Benzenediamine, N4,N4-diethyl-2-methyl-, monohydrochloride | C11H18N2·ClH | 214.73 | 250℃ | |
| 2051-82-3 | | n-(4-aminophenyl)-n-ethyl-acetamid | | | | |
| 2051-84-5 | | N-isopentyl-aniline | C11H17N | 163.26 | | |
| 2051-85-6 | 4-(苯基偶氮)-1,3-苯二醇 | 3-Benzenediol, 4-(phenylazo)-1 | C12H10N2O2 | 214.22 | 143-146℃ | |
| 2051-89-0 | | 4,4'-diamino-biphenyl-3-sulfonic aci | | | | |
| 2051-90-3 | 二氯二苯甲烷 | 1,1'-(dichloromethylene)bis-benzen | C13H10Cl2 | 237.12 | | |
| 2051-95-8 | 3-苯甲酰丙酸 | gamma-oxo-benzenebutanoic aci | C10H10O3 | 178.19 | 114-118℃ | |
| 2051-96-9 | | 2-hydroxy-propanoic aci phenylmethyl ester | C10H12O3 | 180.20 | | |
| 2051-97-0 | | 1-(phenylmethyl)-1h-pyrrol | C11H11N | 157.21 | | |
| 2051-98-1 | 5-溴苊 | 5-bromoacenaphthene | C12H9Br | 233.10 | 50-56℃ | 335℃ |
| 2051-99-2 | | p-bromoisobutylbenzene | C10H13Br | 213.11 | | |
| 20510-55-8 | | sodium chloride-35cl | | | 801℃ | |
| 20510-56-9 | | sodium chloride-37cl | ClNa | 58.44 | | |
| 205106-54-3 | 4-(2-溴乙氧基)-3-氯苯甲酸甲酯 | methyl 4-(2-bromoethoxy)-3-chlorobenzoate | | | | |
| 20511-12-0 | 2-氨基-5-碘吡啶 | 5-iodo-2-pyridinamin | C5H5IN2 | 220.00 | 128-131℃ | |
| 20511-15-3 | 3-氨基-4-氯吡啶 | 3-amino-4-chloropyridine | C5H5ClN2 | 128.56 | | |
| 20511-20-0 | 对甲基肉桂酸乙酯 | Ethyl-4-methyl cinnamate | 20511-20-0 | | | |
| 205111-94-0 | | 3-bromo-8-chloroquinoline | | | | |
| 205113-77-5 | | 5-methyl-1-phenyl-1H-pyrazole-4-carbonyl chloride | C11H9ClN2O | | | |
| 205114-14-3 | 3-溴喹啉-6-羧酸 | 3-bromoquinoline-6-carboxylic acid | | | | |
| 205114-16-5 | | 3-bromo-6-fluoroquinoline | | | | |
| 205114-17-6 | | methyl 3-bromoquinoline-6-carboxylate | | | | |
| 205114-18-7 | | 3-bromoquinoline-6-carboxamide | | | | |
| 205114-19-8 | | 3-bromoquinoline-6-carbonitrile | | | | |
| 205114-20-1 | 3-溴-6-碘喹啉 | 3-bromo-6-iodoquinoline | | | | |
| 205114-66-5 | | cimicifugic acid b | | | | |
| 205115-22-6 | | methyl 3-(benzyloxy)isoxazole-5-carboxylate | | | | |
| 205117-38-0 | | nonafluoro-t-butoxyethylamine hydrochloride | | | | |
| 205126-71-2 | | boc-l-4-carbamoylphenylalanine | | | | |
| 205127-44-2 | | 3-methyl-1-[4-(trifluoromethyl)phenyl]-1h-pyrazol-5-amine | | | | |
| 20513-06-8 | | 2-amino-4-imino-1(4h)-naphthalenon | | | | |
| 20513-21-7 | | 5-cyclohexadien-1-one, 2-amino-4-imino- dihydrochloride | | | | |
| 20513-25-1 | | 5,5-dimethyl-2,4-dithio-hydantoi | | | | |
| 20513-43-3 | | 4,4'-methylenebis(2-chlorophenyl iso-cyanate) | | | 103-106℃ | |
| 20513-71-7 | | 7-hydroxy-4-methyl-2(1h)-quinolone | C10H9NO2 | 175.18 | 250℃ | |
| 20513-79-5 | | 2-heptyl-4,5-dihydro-1h-imidazole-1-ethanamin | | | | |
| 20513-98-8 | | d-glucorono-6,3-lactone acetonide | C9H12O6 | 216.19 | | |
| 205131-81-3 | | 1-allyl-3,5,7,9,11,13,15-heptacyclopentylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane | | | | |
| 20514-29-8 | 2-乙基-5-甲基苯并噁唑 | 2-ethyl-5-methylbenzoxazole | | | | |
| 20514-41-4 | | 2,5-dimethyl-2,4-hexadienedioic acid | C8H10O4 | 170.16 | | |
| 20514-48-1 | | 2,4-Dimethylhexanal | C8H16O | 128.21 | | |
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