Chromeo™ 505 Goat anti-Mouse IgG

Catalog No: 15030 Format: 1 mg $185 Buy
Catalog No: 15050 Format: 100 µg $105 Buy
Absorption:514 nm
Emission:530 nm
Molar Extinction:70,000 M-1 cm-1
Quantum Yield:~30%
Antibody Type:Polyclonal
Purification:Affinity Purified

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Contents: 1 mg (Catalog No. 15030) or 0.1 mg (Catalog No. 15050) of Chromeo™ 505 conjugated Goat anti-Mouse IgG (H+L). The antibody concentration is 2 mg/ml in 0.01 M potassium phosphate, 0.15 M sodium chloride pH 7.4, containing 2 mM sodium azide.

Specificity: This antibody was purified by immunoaffinity chromatography. It reacts with whole molecular mouse IgG and the light chains of other mouse immunoglobulins. No cross-reactivity with non-immunoglobulin serum proteins was observed.

Chromeo 505 can be excited in a range from 480-515 nm, which enables excitation by a green laser. Even if the emission spectrum is shifted towards longer wavelength by some nm, filters designed for fluorescein can be used with Chromeo 505 conjugated antibodies. In contrast to fluorescein, Chromeo 505 exhibits a large tolerance to a broad pH range and high photostability. The Chromeo 505 conjugated antibodies have absorption and emission maxima of approximately 514 and 530 nm, which are compatible with common excitation sources and filter sets.

Application Notes

Immunofluorescence: 1:1,000 to 1:2,000 dilution
Plate-based assays: 1:800 to 1:1,000 dilution

Chromeo 505 Goat anti-Mouse IgG is recommended by Leica Microsystems for Super-Resolution Fluorescence Microscopy using Leica's STimulated Emission Depletion (STED) microscopes. It has also been tested and verified by Leica for use in Ground State Depletion with Individual Molecule return (GSDIM) using the SR GSD microscope. STED enables resolution of 50-70 nm, while GSDIM can mathematically re-construct images with resolution as low as 20 nm.

Absorption and emission spectra of Chromeo 505 Dye.

Absorption and emission spectra of Chromeo 505 Dye.

Chromeo 505 staining in HeLa cells.

Chromeo 505 staining in HeLa cells.
HeLa cells were stained with alpha Tubulin mouse mAb (Clone 5-B-1-2; Cat. No. 39527) and Chromeo 505 Goat anti-Mouse IgG.

Concurrent, multi-color staining of Phospho H2AX and tubulin using Chromeo 505 and Chromeo 642 fluorescent secondary antibodies.

Multi-color staining of Phospho H2AX and tubulin using Chromeo 488 and Chromeo 494 secondary antibodies in etoposide-treated HeLa cells.
HeLa cells were treated with 100 µM etoposide for 6 hours prior to fixation with methanol. The histone-variant H2AX was stained with Histone H2AX phospho Ser139 rabbit pAb (Cat. No. 39117) and Chromeo 642 Goat anti-Rabbit IgG (Cat. No. 15044), while tubulin was visualized using alpha Tubulin mouse mAb (Clone 5-B-1-2, Cat. No. 39527) and Chromeo 505 Goat anti-Mouse IgG. The nuclei were counter-stained with DAPI and then the three separate images were merged.


Some products may be shipped at room temperature. This will not affect their stability or performance. Upon receipt, unconjugated antibodies may be stored at -20°C for up to 2 years. Fluorophore- & enzyme-conjugated antibodies should be stored at 4°C. Fluorophore-conjugated antibodies should be protected from light. Keep reagents on ice when not in storage; to avoid repeated freeze/thaw cycles, we recommend aliquoting items that will be stored frozen into single-use fractions prior to freezing.


This product is guaranteed for 6 months from date of receipt.

This product is for research use only and is not for use in diagnostic procedures.