5(6)-Carboxyfluorescein Diisobutyrate (CFDI)

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£544.00

SKU:: C1145-45E
Molecular Weight:: 516.5
Storage Conditions:: -20°C
Supplier:: United States Biological
CAS Number:: 287111-44-8
Extra Details:: A protected 5(6)-Carboxyfluorescein in which the hydroxyl groups are acylated with isobutyric acid. The protection prevents self-condensation during carboxyl activation andavoids the formation of fluorophore-oligomer containg by-products associated with the use of unprotected FAM. Synonyms: CFDI; 3’,6’-Bis(2-methyl-1-oxopropoxy)-3-oxosSpiro[isobenzofuran-1(3H),9’-[9H]xanthene]-ar-carboxylic Acid CAS Number: 287111-44-8 Molecular Formula: C29H24O9 Molecular Weight: 516.5 Purity: ≥98% Appearance: Yellow solid Melting Point: >138ºC (dec.) Solubility: Chloroform (Slightly), Methanol (Slightly) Method for Determining Identity: Proton NMR Spectroscopic and Mass Spectrometric Analysis TLC Conditions: SiO2; Dichloromethane: Methanol; 9:1; Visualized with UV and AMCS; Rf=0.35 Ethly Acetate Content: ~2% Atmoshere: Inert Gas Storage and Stability: May be stored at RT for short-term only. Long-term storage is recommended at -20°C for 6 months after receipt. For maximum recovery of product, centrifuge the original vial prior to removing the cap. Store Under inert atmosphere.