(R)-2-Amino-2-[(5-fluoresceinyl)aminocarbonyl]ethyl Methanethiosulfonate, Trifluoroacetate Salt (MTSEA-Fluorescein)

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£479.00

SKU:: A1377-80
Molekulargewicht:: 642.58
Lagerbedingungen:: -20°C
Hersteller:: United States Biological
CAS Number:: 1356019-48-1
Weitere Details:: A thiol specific fluorescent probe useful for ion channel and protein topology research. The recently available MTS-fluorophores may find application in the real-time monitoring of conformational changes, since fluorophores coupled to introduced cysteines can change their fluorescence during a conformational change. Fluorescence lifetime may also yield information regarding distances and molecular motion in a protein molecule._x000B_Fluorescence: max. Abs. 492nm; max. Em. 515nm; e x 10-3: 75 Synonyms: MTSEA-Fluorescein Trifluoroacetic Acid Salt CAS Number: 1356019-48-1 Free Base: 1356019-47-0 Molecular Formula: C₂₆H₂₁F₃N₂O₁₀S₂ Molecular Weight: 642.58 Purity: ≥95% Appearance: Yellow to orange solid Melting Point: >130°C (dec.) Solubility: DMSO (Slightly) Atmosphere: Inert Method for Determining Identity: Proton NMR and Mass Spectrometric Analysis TLC Conditions: SiO2; Dichloromethane: Methanol=9:1; Visualized with UV, KMnO4 and Naked Eye; Single spot, Rf=0.50 Elemental Analysis: Calculated: %C: 48.60, %H: 3.29, %N: 4.36 TFA Content (Ion Chromatography): As reported Water Content (Karl Fischer): As Reported Storage and Stability: May be stored at RT for short-term only. Long-term storage is recommended at -20°C. Stable for 6 months after receipt. Hygroscopic. Store under inert atmosphere.