Description
TurboTag 673 Protein Labeling Kit for Reliable Far-Red Fluorescence Conjugation
TurboTag 673 from emp BIOTECH is a ready-to-use protein labeling and purification kit designed for the efficient covalent conjugation of proteins with the far-red fluorophore DY-675. Optimized for proteins ≥ 25 kDa, including monoclonal antibodies, this kit uses an NHS ester of DY-675 to form stable amide bonds with primary amines. The resulting conjugates emit strong fluorescence with excitation/emission maxima at 680 nm and 699 nm, making them ideal for applications requiring minimal background and high sensitivity.
Each vial delivers 50 nmol of reactive dye, sufficient to label up to 15 nmol of protein. TurboTag 673 is supplied with protocols optimized for labeling both 1 mg and 100 µg of IgG, ensuring reproducibility and ease of use in both small- and medium-scale labeling workflows.
Performance Highlights
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Efficient fluorescent labeling of proteins ≥ 25 kDa, especially IgG
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Far-red fluorescence for low-background detection (excitation/emission: 680/699 nm)
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NHS ester reactivity enables robust covalent bond formation
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High extinction coefficient (180,000 M⁻¹·cm⁻¹) for intense signal output
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Pre-optimized protocols for 1 mg and 100 µg of protein
Properties
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Molecular Weight: 803.98
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Empirical Formula: C₄₆H₄₉N₃O₈S
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Absorption [λmax]: 680 ± 3 nm
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Emission [λmax]: 699 ± 3 nm
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Extinction Coefficient (ε): 180,000 M⁻¹·cm⁻¹
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Reactive Moiety: NHS ester (reacts with primary amines to form stable amide linkage)
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Storage: −20 °C, dry, protected from light
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Labeling Capacity: Up to 15 nmol of protein per 50 nmol dye vial
Applications
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Fluorescent labeling of antibodies and large proteins
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High-sensitivity far-red imaging and detection
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Multiplex immunoassays
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Biomarker detection and protein tracking
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Proteomics and diagnostics research
Why Choose TurboTag™ 673?
TurboTag 673 offers a reliable solution for covalent fluorescent labeling of proteins with a robust DY-675 fluorophore. Designed for reproducibility and high sensitivity, the kit enables efficient conjugation with strong far-red emission, ideal for demanding fluorescence-based applications. With convenient labeling protocols and minimal hands-on time, TurboTag 673 is an essential tool for researchers seeking high-quality, low-background protein-dye conjugates.
