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SPQ
6-Methoxy-N-(3-sulfopropyl)quinolinium
A chloride indicator that has the fluorescence dependent of chloride concentration. Its fluorescence is quenched by chloride through collision quenching.
Chemical structure for SPQ [6-Methoxy-N-(3-sulfopropyl)quinolinium]
Chemical structure for SPQ [6-Methoxy-N-(3-sulfopropyl)quinolinium]
CatalogSize
Price
Quantity
2125225 mg
Price
 
Physical properties

Molecular weight281.33
SolventDMSO
Spectral properties

Excitation (nm)317
Emission (nm)451
Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
StorageFreeze (< -15 °C); Minimize light exposure
UNSPSC12352200
CAS83907-40-8
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Page updated on October 5, 2025