| CAS编号 | 中文名 | 英文名 | 分子式 | 分子量 | 熔点 | 沸点 |
| 55099-31-5 | 10-溴代癸酸乙酯 | Ethyl 10-bromodecanoate | C12H23BrO2 | 279.22 | | 134°C/3mmHg(lit.) |
| 55099-55-3 | | Benzene,1,1'-((2,2-dichlorocyclopropylidene)bis[oxy])bis- | C15H12Cl2O2 | 295.16 | | |
| 550997-55-2 | ERB-196 | | C17H10FNO2 | 279.27 | | |
| 550998-52-2 | 6-氟苯并[b]噻吩-2-羧酸甲酯 | methyl 6-fluorobenzo[b]thiophene-2-carboxylate | C10H7FO2S | 210.2300 | | |
| 550998-53-3 | 7-溴苯甲酸[b]噻吩-2-羧酸甲酯 | methyl 7-bromobenzo[b]thiophene-2-carboxylate | C10H7BrO2S | 271.13 | | 358.9°C at 760 mmHg |
| 550998-54-4 | | methyl 7-fluorobenzo[b]thiophene-2-carboxylate | C10H7FO2S | 210.22 | | |
| 550998-55-5 | | 7-trifluoromethyl-benzo[b]thiophene-2-carboxylic acid methyl ester | C11H7F3O2S | 260.23 | | |
| 550998-56-6 | 7-氯苯并[b]噻吩-2-羧酸甲酯 | methyl 7-chlorobenzo[b]thiophene-2-carboxylate | C10H7ClO2S | 226.6800 | | |
| 550998-57-7 | | 5,7-difluoro-benzo[b]thiophene-2-carboxylic acid methyl ester | | | | |
| 550998-58-8 | | 6-methoxy-benzo[b]thiophene-2-carboxylic acid methyl ester | C11H10O3S | 222.2603 | | |
| 550998-59-9 | | 7-bromo-2-benzofurancarboxylic acid | C9H5BrO3 | 241.04 | | 370.9°C at 760 mmHg |
| 550998-66-8 | | 7-(trifluoromethyl)benzo[b]thiophene-2-carboxylicacid | C10H5F3O2S | 246.21 | | |
| 550998-67-9 | | 7-fluorobenzo[b]thiophene-2-carboxylic acid | C9H5FO2S | 196.2 | | |
| 550998-68-0 | | 5,7-difluoro-benzo[b]thiophene-2-carboxylic acid | | | | |
| 550999-74-1 | | (R)-7-chloro-n-(quinuclidin-3-yl)benzo[b]thiophene-2-carboxamide hydrochloride | C16H18Cl2N2OS | 357.3 | | |
| 550999-75-2 | | encenicline | C16H17ClN2OS | 320.84 | | |
| 551-01-9 | | 6-methoxy-8-(3-diethylaminopropylamino)quinoline | | | | |
| 551-04-2 | | naphthalene-1-acetic acid propyl ester | C15H16O2 | 228.29 | | |
| 551-06-4 | 异硫氰酸-1-萘酯 | isothiocyanic acid, 1-naphthyl ester | C11H7NS | 185.25 | 53-57℃ | |
| 551-08-6 | 3-亚丁基-1(3H)-异苯并呋喃酮 | 3-butylidene-1(3H)-Isobenzofuranone | C12H12O2 | 188.22 | | 139-142 °C |
| 551-09-7 | | N-1-naphthalen-1-yl-ethane-1,2-diamine | C12H14N2 | 186.25 | 188-190 °C | 320 °C at 761 mmHg |
| 551-11-1 | | 7-[3,5-dihydroxy-2-(3-hydroxy-oct-1-enyl)-cyclopentyl]-hept-5-enoic acid | C20H34O5 | 354.48 | | |
| 551-15-5 | 4′,7-dihydroxyflavanone 4′-glucoside | liquiritin | C21H22O9 | 418.39 | | |
| 551-16-6 | 6-氨基青霉素酸 | (+)-6-Aminopenicillanic acid | C8H12N2O3S | 216.26 | 197-203℃ | |
| 551-27-9 | | propicillin | | | | |
| 551-35-9 | | n-isopropyl-salicylamid | | | | |
| 551-36-0 | | salicylic acid, p-amino-, 2-(diethylamino)ethyl ester, hydrochloride | | | | |
| 551-45-1 | | 2-allyl-4-hydroxy-3-methyl-2-cyclopenten-1-one | | | | |
| 551-51-9 | | 1-(2,5-diphenyl-3-furyl)-3-(4-methyl-1-piperazinyl)-1-propanon dihydrochlor | | | | |
| 551-55-3 | | hexyl 3-indoleacetate | | | | |
| 551-58-6 | | (7as-(7(2R*,3S*),7ar*))-izin-7-yl) methyl este | | | | |
| 551-62-2 | 1,2,3,4-四氟苯 | 1,2,3,4-tetrafluoro-benzene | C6H2F4 | 150.07 | -42-42℃ | 95℃ |
| 551-64-4 | | zinc tartrate | | | | |
| 551-68-8 | | d-psicose | C6H12O6 | 180.15 | 109 °C | |
| 551-72-4 | | l-chiro-inositol | C6H12O6 | 180.16 | 230℃ | 291.3 °C at 760 mmHg |
| 551-74-6 | | 1,6-bis((2-chloroethyl)amino)-1,6-dideoxy-, dihydrochloride, d-mannito | | | | |
| 551-84-8 | | d-xylulose | C5H10O5 | 150.13 | | |
| 551-88-2 | | 3-nitro-pentane | C5H11NO2 | 117.15 | | |
| 551-92-8 | 二甲硝咪唑 | RP8595 | C5H7N3O2 | 141.13 | 177-182°C | |
| 551-93-9 | 2-氨基苯乙酮 | 1-(2-amino-phenyl)-ethanone | C8H9NO | 135.16 | 20-99℃ | 70-71℃(3 |
| 5510-56-5 | 4-[(2-氨基苯基)硫]-N,N-二甲基-3-硝基苯磺酰胺 | 4-((2-Aminophenyl)thio)-N,N-dimethyl-3-nitrobenzenesulfonamide | C14H15N3O4S2 | 353.42 | | |
| 5510-99-6 | | 2,6-di-sec-butyl-phenol | C14H22O | 206.32 | -42-42℃ | 255-260℃ |
| 55100-02-2 | | (2-methoxyethyl)(tetrahydrofuran-2-ylmethyl)amine | | | | |
| 55100-33-9 | | n-methyl-3,4,5-trimethoxybenzamide | | | | |
| 55100-63-5 | | 2-methyl-1,3-propanediol and 2,2,4-trimethyl-1,3-pentanediol | | | | |
| 55100-93-1 | | O-[2,2,2-trifluoro-1,1-bis(trifluoro-methyl)ethyl]-O,O-(trifluoromethyl)peroxycarbonate | C6F12O4 | 364.04 | | |
| 551000-83-0 | tert-Butyl((1R,4S)-4-hydroxycyclohex-2-en-1-yl)carbamic acid | | C11H19NO3 | 213.27 | | |
| 551001-79-7 | 5-甲氧基苯并呋喃-2-硼酸 | (5-methoxybenzofuran-2-yl)boronic acid | C9H9BO4 | 191.98 | | |
| 551002-32-5 | | 2-(4-methoxy-phenyl)-benzofuran-5-carboxylic acid methyl ester | | | | |
| 551002-42-7 | | 2,4-difluoro-6-iodophenol | | | | |
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