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Cat.No. 2919 - NPE-caged-HPTS | C24H14NO12Na3S3 | CAS No. 223759-19-1
Description: Caged fluorescent pH indicator
Chemical Name: 8-Hydroxypyrene-1,3,6-tris-sulfonic acid-8-1-(2-nitrophenyl)ethyl ether
Purity: ≥97% (HPLC)
Literature (1)

Biological Activity

Caged fluorescent pH indicator. Rapidly releases the fluorophore HPTS (pyranine) (pKa 7.25) upon two-photon excitation (>3000 s-1). Routinely used for photolysis calibration. Suitable for use in small-compartment diffusion studies.

Technical Data

M. Wt 673.53
Formula C24H14NO12Na3S3
Storage Store at -20°C
Purity ≥97% (HPLC)
CAS Number 223759-19-1
PubChem ID 56972217
Smiles [Na+].[Na+].[Na+].CC(OC1=C2C=CC3=C4C(C=CC(=C24)C(=C1)S([O-])(=O)=O)=C(C=C3S([O-])(=O)=O)S([O-])(=O)=O)C1=CC=CC=C1[N+]([O-])=O

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.

Tocris products are intended for laboratory research use only, unless stated otherwise.

Solubility Data

Solvent Max Conc. mg/mL Max Conc. mM
water 67.35 100
DMSO 67.35 100

Preparing Stock Solutions

The following data is based on the product molecular weight 673.53. Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Select a batch to recalculate based on the batch molecular weight:
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.48 mL 7.42 mL 14.85 mL
5 mM 0.3 mL 1.48 mL 2.97 mL
10 mM 0.15 mL 0.74 mL 1.48 mL
50 mM 0.03 mL 0.15 mL 0.3 mL

Molarity Calculator

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