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18438616290
簡(jiǎn)要描述：Fluorescein 2321-07-5A phthalic indicator dye that appears yellow-green in normal tear film and bright green in a more alkaline medium such as the aqueous humor,
產(chǎn)品型號(hào)：abs47027679廠商性質(zhì)：生產(chǎn)廠家更新時(shí)間：2025-12-24訪 問(wèn) 量：598產(chǎn)品分類
Product Category詳細(xì)介紹
| 品牌 | absin | CAS | 2321-07-5 |
|---|---|---|---|
| 分子式 | C20H12O5 | 純度 | ＞95% |
| 分子量 | 332.32 | 貨號(hào) | abs47027679 |
| 規(guī)格 | 5mg | 供貨周期 | 現(xiàn)貨 |
| 主要用途 | used as a diagnostic aid | 應(yīng)用領(lǐng)域 | 化工,生物產(chǎn)業(yè),農(nóng)林牧漁,制藥/生物制藥,綜合 |
Fluorescein 2321-07-5
| 產(chǎn)品描述 | |
| 描述 | A phthalic indicator dye that appears yellow-green in normal tear film and bright green in a more alkaline medium such as the aqueous humor, used as a diagnostic aid in corneal injuries and corneal trauma. |
| 純度 | ＞95% |
| 儲(chǔ)存/保存方法 | store at -20℃ for one year（Powder）； in DMSO or others solvent store at 2-4℃ for two weeks, at -20℃ for six months. |
| 基本信息 | |
| 別名 | 熒光素；Solvent Yellow 94； Resorcinolphthalein；Yellow fluorescein |
| 外觀 | 橙黃或淺橙紅色結(jié)晶粉末 |
| 可溶性/溶解性 | DMSO ：67 mg/mL (201.61 mM |
| 生物活性 | |
| In vitro(體外研究) | 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. |
| 參考文獻(xiàn) | |
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