Name: iFluor® 568 Styramide
Brand: AAT Bioquest
SKU: 45030
Price: 348 USD
Availability: InStock

iFluor® 568 Styramide

Power Styramide™ Signal Amplification (PSA™) system is one of the most sensitive methods that can detect extremely low-abundance targets in cells and tissues with improved fluorescence signal 10-50 times higher than the widely used tyramide (TSA) reagents. In combination with our superior iFluor® dyes that have higher florescence intensity, increased photostability and enhanced water solubility, the iFluor® dye-labeled Styramide™ conjugates can generate fluorescence signal with significantly higher precision and sensitivity (more than 100 times) than standard ICC/IF/IHC. PSA™ utilizes the catalytic activity of horseradish peroxidase (HRP) for covalent deposition of fluorophores in situ. PSA™ radicals have much higher reactivity than tyramide radicals, making the PSA™ system much faster, more robust and sensitive than the traditional TSA reagents. Compared to tyramide reagents, the Styramide™ conjugates have ability to label the target at higher efficiency and thus generate significantly higher fluorescence signal. Styramide™ conjugates also allow significantly less consumption of primary antibody compared to standard directly conjugate method or tyramide amplification with the same level of sensitivity. iFluor® 568 Styramide is a superior replacement for Alexa Fluor 568 tyramide or other spectrally similar fluorescent tyramide conjugates or TSA reagents.

Microtubules of fixed HeLa cells were labeled with anti-α tubulin mouse mAb followed by HRP-labeled goat anti-mouse IgG (Cat No. 16728). The fluorescence signal was developed using Alexa Fluor® 568 tyramide or iFluor® 568 styramide™ (Cat No. 45030) and detected with a TRITC/Cy3 filter set. iFluor® 568 styramide™ shows significantly higher fluorescence intensity than Alexa Fluor® 568 tyramide under the same conditions.

Protocol

SDS

Catalog	Size	Price	Quantity
45030	100 Slides	Price

Calculators

Common stock solution preparation

Table 1. Volume of DMSO needed to reconstitute specific mass of iFluor® 568 Styramide 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	80.412 µL	402.059 µL	804.117 µL	4.021 mL	8.041 mL
5 mM	16.082 µL	80.412 µL	160.823 µL	804.117 µL	1.608 mL
10 mM	8.041 µL	40.206 µL	80.412 µL	402.059 µL	804.117 µL

Molarity calculator

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

Mass (Calculate)		Molecular weight		Volume (Calculate)		Concentration (Calculate)		Moles
mg	÷	1243.6 g/mol	=	mL	x	mM	=	mmol

Citations

View all 2 citations: Citation Explorer

Tyramide signal amplification-based detection system: A novel approach to improve detection efficiency for circulating tumor cells

Authors:

Chen, Lin and Yang, Zhonglin and Lu, Yue and Li, Shan and Tang, Dongjiang and Zhang, Lei

Journal:

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy (2025): 126898

Membrane progesterone receptor $\gamma$ (paqr5b) is essential for the formation of neurons in the zebrafish olfactory rosette

Authors:

Mustary, Umme Habiba and Maeno, Akiteru and Rahaman, Md Mostafizur and Ali, Md Hasan and Tokumoto, Toshinobu

Journal:

Scientific Reports (2024): 24354

Physical properties

Molecular weight	1243.60
Solvent	DMSO

Spectral properties

Correction factor (260 nm)	0.34
Correction factor (280 nm)	0.15
Extinction coefficient (cm ^-1 M ^-1)	100000 ¹
Excitation (nm)	568
Emission (nm)	587
Quantum yield	0.57 ¹

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	12352200

Instrument settings

Fluorescence microscope
Excitation	Cy3/TRITC filter set
Emission	Cy3/TRITC filter set
Recommended plate	Black wall/clear bottom

Documents

Protocol
Safety Data Sheet
Certificate of Analysis
Brochure: Power Styramide™ Signal Amplification (PSA™)

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Page updated on December 19, 2025