Name: Streptavidin-iFluor® 750-xtra conjugate
Brand: AAT Bioquest
SKU: 46008
Availability: InStock

Streptavidin-iFluor® 750-xtra conjugate

Streptavidin-iFluor® 750®-xtra Conjugate is a near-infrared fluorescent probe for detecting biotinylated targets.

High Sensitivity: iFluor® 750-xtra provides a stable NIR fluorescence for low-abundance target detection.
Specific Biotin Binding: Streptavidin binds biotin with high affinity.
Direct equivalent: Replacement for Streptavidin-Alexa Fluor® 750 from Thermo Fisher.
Versatile Applications: Suitable for Western blot, microscopy, and in vivo imaging.

Datasheet

SDS

COA

Catalog	Size	Price	Quantity
46008	100 ug	Price
46009	1 mg	Price

Overview

Streptavidin-iFluor® 750®-xtra Conjugate is a highly sensitive fluorescent reagent designed for detecting biotinylated biomolecules with near-infrared fluorescence. It features a streptavidin core for strong, specific binding to biotin, and is conjugated to iFluor® 750, a photostable fluorophore with excitation/emission maxima around 755/778 nm.
The near-infrared emission of iFluor® 750-xtra minimizes background autofluorescence interference and avoids spectral overlap with visible-range dyes, making it ideal for multicolor fluorescence detection in microscopy, flow cytometry, Western blotting, and in vivo imaging.

References

View all 8 references: Citation Explorer

Fluorescence In Situ Hybridization of Small Non-Coding RNAs.

Authors:

Vautrot, Valentin and Heckler, Géraud and Aigueperse, Christelle and Behm-Ansmant, Isabelle

Journal:

Methods in molecular biology (Clifton, N.J.) (2021): 73-85

Egg autofluorescence and options for detecting peanut agglutinin binding for the identification of Haemonchus contortus eggs in fecal samples.

Authors:

Abbas, Ibrahim and Hildreth, Michael

Journal:

Veterinary parasitology (2019): 69-74

Photobleaching Comparison of R-Phycoerythrin-Streptavidin and Streptavidin-Alexa Fluor 568 in a Breast Cancer Cell Line.

Authors:

Ostad, Seyed Nasser and Babaei, Sepideh and Bayat, Ali Ahmad and Mahmoudian, Jafar

Journal:

Monoclonal antibodies in immunodiagnosis and immunotherapy (2019): 25-29

Tricellulin Expression and its Deletion Effects in the Endolymphatic Sac.

Authors:

Matsubara, Ai and Miyashita, Takenori and Inamoto, Ryuhei and Sakaguchi, Hirofumi and Kamitani, Toru and Mori, Nozomu and Hoshikawa, Hiroshi

Journal:

The journal of international advanced otology (2018): 312-316

Plasmonic activation of gold nanorods for remote stimulation of calcium signaling and protein expression in HEK 293T cells.

Authors:

Sanchez-Rodriguez, Sandra P and Sauer, Jeremy P and Stanley, Sarah A and Qian, Xi and Gottesdiener, Andrew and Friedman, Jeffrey M and Dordick, Jonathan S

Journal:

Biotechnology and bioengineering (2016): 2228-40

Physical properties

Solvent

PBS

Spectral properties

Correction factor (260 nm)	0.044
Correction factor (280 nm)	0.039
Correction factor (565 nm)	0.0250
Correction factor (650 nm)	0.1413
Extinction coefficient (cm ^-1 M ^-1)	275000 ¹
Excitation (nm)	757
Emission (nm)	779
Quantum yield	0.12 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

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Page updated on May 8, 2026