中文名 | 荧光素 |
英文名 | Fluorescein |
别名 | 萤光黄 荧光酯 萤光红 荧光素 荧光橙红 萤光橙黄 荧光素,水溶 荧光素, 指示剂 |
英文别名 | S NO 880 FLUORESCEIN Fluorescein C.I. 45350.1 Fluorescein Acid SOLVENT YELLOW 94 RESORCINOL PHTHALEIN Fluorescein Free Acid Diresorcinolphthalein C.I. Solvent Yellow 94 FLUORESCEIN, ALCOHOL SOLUBLE Tetraoxyphthalophenone anhydride 2-(6-hydroxy-3-oxo-3H-xanthen-9-yl)benzoic acid 3,6-dihydroxyspiro[isobenzofuran-1(3H),9-xanthen]-3-one FLUORESCEIN, FREE ACIDFLUORESCEIN, FREE ACIDFLUORESCEIN, FREE ACID |
CAS | 2321-07-5 |
EINECS | 219-031-8 |
化学式 | C20H12O5 |
分子量 | 332.31 |
InChI | InChI=1/C20H12O5/c21-11-5-7-15-17(9-11)24-18-10-12(22)6-8-16(18)20(15)14-4-2-1-3-13(14)19(23)25-20/h1-10,21-22H |
密度 | 1.2739 (rough estimate) |
熔点 | 320°C(lit.) |
沸点 | 429.44°C (rough estimate) |
水溶性 | insoluble |
溶解度 | 溶解性不溶于水、乙醚、苯、氯仿; 溶于乙醇、甲醇、丙酮、乙酸乙酯、N,N-二甲基甲酰胺 |
折射率 | 1.5000 (estimate) |
酸度系数 | 2.2, 4.4, 6.7(at 25℃) |
存储条件 | room temp |
稳定性 | 稳定。可燃。与强氧化剂不相容。 |
外观 | 粉末 |
颜色 | Red to orange |
最大波长(λmax) | ['493.5nm, 496nm, 460nm, 515nm'] |
Merck | 14,4159 |
BRN | 94324 |
物化性质 | 橙黄或浅橙红色结晶粉末。熔点314-316℃(分解)。溶于热乙醇、冰醋酸、碱溶液,呈绿色萤光,不溶于水、苯、氯仿和乙醚。 |
MDL号 | MFCD00005050 |
体外研究 | Fluorescein is nearly inactive as a photodynamic sensitizer. Fluorescein consequently is almost useless as a photodynamic sensitizer, but it is of great value in fluorescence immunoassays. The fluorescein dye is a common fluorescent probe. Its very high molar absorptivity at the wavelength of the argon laser (488 nm), large fluorescence quantum yield and high photostability makes it a very useful and sensitive fluorescent label. Fluorescein is commercially available in many derivatives, such as fluorescein isothiocyanate and fluorescein succinimidyl ester, that can be covalently attached to macromolecules and to amino acids. The labeled molecules can be detected with very high sensitivity which is utilized in, for example, capillary electrophoresis. The emission spectrum of fluorescein overlaps extensively the absorption spectrum of tetramethyl rhodamine, which is a related strongly fluorescent dye, making this pair very suitable for energy transfer experiments to determine distances within and between labeled macromolecules. Fluorescein in aqueous solution occurs in cationic, neutral, anionic and dianionic forms making its absorption and fluoresence properties strongly pH dependent. |
危险品标志 | Xi - 刺激性物品 |
风险术语 | R43 - 与皮肤接触可能致敏。 R36 - 刺激眼睛。 R36/37/38 - 刺激眼睛、呼吸系统和皮肤。 |
安全术语 | S22 - 切勿吸入粉尘。 S24/25 - 避免与皮肤和眼睛接触。 S37/39 - 戴适当的手套和护目镜或面具。 S26 - 不慎与眼睛接触后,请立即用大量清水冲洗并征求医生意见。 S36/37/39 - 穿戴适当的防护服、手套和护目镜或面具。 S27 - 一旦衣物受到污染,请立即脱去。 |
WGK Germany | 3 |
RTECS | LM5075000 |
FLUKA BRAND F CODES | 10-21 |
TSCA | Yes |
海关编号 | 32042000 |
上游原料 | 苯酐 间苯二酚 苯酐 |
下游产品 | 赤藓红B 异硫氰酸荧光素 3',6'-二甲氧基荧烷 |
参考资料 展开查看 | 1. [IF=6.419] Pu-Wang Li et al."Development of drug-loaded chitosan–vanillin nanoparticles and its cytotoxicity against HT-29 cells."Drug Deliv. 2016;23(1):30-35 注意:部分产品我司仅能提供部分信息,我司不保证所提供信息的权威性,仅供客户参考交流研究之用。 用途: 荧光光度分析硫离子,试验溴,滴定氯、溴和碘。吸附指示剂,氧化还原指示剂。 储存条件: RT 敏感性: 易吸潮 外观: 橙红色结晶性粉末 熔点: 314-316℃ 介绍 |
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