货号：E-2059980
CAS：N/A
规格：mg
纯度：≥95%
生产商：瑞禧生物

FAM NHS ester, 6-isomer，羧基荧光染料
Fluorescein (FAM) is a bright fluorophore that has found an extremely wide application in life science research. The fluorophore is hydrophilic and its derivatives possess good solubility in aqueous buffers.
Fluorescein is compatible with a wide variety of fluorescent instrumentation - most instruments are equipped with FAM channel filters.
This product contains the pure 6-isomer of fluorescein.
 
General properties：
Appearance:

yellow crystalline solid
Mass spec M+ increment:

358.0
Molecular weight:

473.39
Molecular formula:

C25NO9H15
IUPAC name:

(2,5-dioxopyrrolidin-1-yl) 3',6'-dihydroxy-1-oxospiro[2-benzofuran-3,9'-xanthene]-5-carboxylate
Solubility:

good in DMF, DMSO
Quality control:

NMR 1H, HPLC-MS (95%)
Storage conditions:

Storage: 12 months after receival at -20°C in the dark. Transportation: at room temperature for up to 3 weeks. Avoid prolonged exposure to light. Desiccate.
FAM NHS ester, 6-isomer，羧基荧光染料
 
Spectral properties：
Excitation maximum, nm:

494
ε, L⋅mol−1⋅cm−1:

75000
Emission maximum, nm:

520
Fluorescence quantum yield:

0.9
CF260:

0.20
CF280:

0.17