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Pyranine free acid

PH Indicator

Pyranine free acid is a pH-sensitive fluorescent indicator that exhibits strong fluorescence in response to pH changes. As a chemosensor, it selectively binds to Cu+ ions, making it valuable for applications in metal ion detection. Additionally, pyranine free acid serves as a coloring agent, biological stain, and optical detecting reagent, with excitation and emission wavelengths at 450 nm and 510 nm, respectively. Its versatility makes it suitable for various research applications in biosensing and environmental monitoring.

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Specifications

Manufacturer	Adooq Bioscience
CAS Number	27928-00-3
Applications	PH Indicator
Formula	C₁₆H₁₀O₁₀S₃
Molecular Weight	458.44
Synonyms	HPTS free acid; Solvent Green 7 free acid
SMILES	O=S(O)(C1=C2C=CC3=C(S(=O)(O)=O)C=C(S(=O)(O)=O)C(C3=C24)=CC=C4C(O)=C1)=O

Storage & Solubility

In Vitro Solubility

Reported Solubility

No reported solubility data are available for this product.

Preparing Stock Solutions

Stock preparation is unavailable for this product molecular weight.

Calculated stock concentrations do not establish solvent solubility. Refer to the reported solubility data for experimental guidance.

Storage

Store powder at -20°C, keep desiccated.
In powder form, the chemical is stable for 36 months.
In solution, store at -20°C and use within 1 month to prevent loss of potency. Aliquot to avoid multiple freeze/thaw cycles.