Name: 8-Hydroxypyrene-1,3,6-trisulfonic acid, trisodium salt [HPTS] *CAS 6358-69-6*
Brand: AAT Bioquest
SKU: 85
Price: 90 USD
Availability: InStock

8-Hydroxypyrene-1,3,6-trisulfonic acid, trisodium salt

HPTS; CAS 6358-69-6

8-Hydroxypyrene-1,3,6-trisulfonic acid, trisodium salt [HPTS] is the cell-impermeable fluorescent pH indicator used for slightly acidic pH range (pKa = 6.4). It is highly water-soluble.

Protocol

SDS

COA

Catalog	Size	Price	Quantity
85	1 g	Price

Calculators

Common stock solution preparation

Table 1. Volume of Water needed to reconstitute specific mass of 8-Hydroxypyrene-1,3,6-trisulfonic acid, trisodium salt [HPTS] *CAS 6358-69-6* to given concentration. Note that volume is only for preparing stock solution. Refer to sample experimental protocol for appropriate experimental/physiological buffers.

	0.1 mg	0.5 mg	1 mg	5 mg	10 mg
1 mM	190.701 µL	953.507 µL	1.907 mL	9.535 mL	19.07 mL
5 mM	38.14 µL	190.701 µL	381.403 µL	1.907 mL	3.814 mL
10 mM	19.07 µL	95.351 µL	190.701 µL	953.507 µL	1.907 mL

Molarity calculator

Enter any two values (mass, volume, concentration) to calculate the third.

Mass (Calculate)		Molecular weight		Volume (Calculate)		Concentration (Calculate)		Moles
mg	÷	524.38 g/mol	=	mL	x	mM	=	mmol

Citations

View all 4 citations: Citation Explorer

Two-Photon Image-Guided Automated 3D Locating of Micropipette Tip

Authors:

Li, Zizhen and Li, Jie and Zhao, Qili and Zhao, Xin and Sun, Mingzhu

Comparative responses of two maize genotypes with contrasting drought tolerance to biochar application

Authors:

Ruan, Renjie and Lambers, Hans and Wang, Yaosheng

Journal:

Biochar (2024): 1--15

Effects of biochar amendment on root growth and plant water status depend on maize genotypes

Authors:

Ruan, Renjie and Wang, Yaosheng

Journal:

Agricultural Water Management (2024): 108688

Method for Passive Droplet Sorting after Photo-Tagging

Authors:

Dobson, Chandler and Zielke, Claudia and Pan, Ching W and Feit, Cameron and Abbyad, Paul

Journal:

Micromachines (2020): 964

References

View all 20 references: Citation Explorer

Temperature dependence of excited-state proton transfer in water electrolyte solutions and water-methanol solutions

Authors:

Leiderman P, Gepshtein R, Uritski A, Genosar L, Huppert D.

Journal:

J Phys Chem A Mol Spectrosc Kinet Environ Gen Theory (2006): 9039

Emission-based optical carbon dioxide sensing with HPTS in green chemistry reagents: room-temperature ionic liquids

Authors:

Oter O, Ertekin K, Topkaya D, Alp S.

Journal:

Anal Bioanal Chem (2006): 1225

The effect of neuronal morphology and membrane-permeant weak acid and base on the dissipation of depolarization-induced pH gradients in snail neurons

Authors:

Pantazis A, Keegan P, Postma M, Schwiening CJ.

Journal:

Pflugers Arch (2006): 175

Effect of electrolytes on the excited-state proton transfer and geminate recombination

Authors:

Leiderman P, Gepshtein R, Uritski A, Genosar L, Huppert D.

Journal:

J Phys Chem A Mol Spectrosc Kinet Environ Gen Theory (2006): 5573

Universal behaviour of gel formation from acrylamide-carrageenan mixture around the gel point: a fluorescence study

Authors:

Aktas DK, Evingur GA, Pekcan O.

Journal:

J Biomol Struct Dyn (2006): 83

Physical properties

Molecular weight	524.38
Solvent	Water

Spectral properties

Excitation (nm)	452
Emission (nm)	512

Storage, safety and handling

H-phrase	H303, H313, H333
Hazard symbol	XN
Intended use	Research Use Only (RUO)
R-phrase	R20, R21, R22
Storage	Freeze (< -15 °C); Minimize light exposure
UNSPSC	12171501
CAS	6358-69-6

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Page updated on October 13, 2025