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FAM NHS ester, 6-isomer,羧基荧光染料

作者:FAM NHS ester, 6-isomer,羧基荧光染料 发布时间:2022-09-20 14:20:48 次浏览

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, Lmol1⋅cm1:

75000

Emission maximum, nm:

520

Fluorescence quantum yield:

0.9

CF260:

0.20

CF280:

0.17