Labeling Kit

MCE Labeling kits are ready-to-use reagents designed for the efficient and stable covalent conjugation of fluorescent dyes or other functional molecules to antibodies or proteins. These kits are based on well-established chemical coupling chemistries and enable rapid labeling under mild reaction conditions, forming stable covalent bonds that confer clear and traceable detection signals to target molecules.

MCE Labeling kits are widely used in immunofluorescence, flow cytometry, Western blotting, confocal microscopy, and multiplex fluorescence assays, providing efficient, robust, and reliable solutions for protein functional studies, cellular analysis, and imaging applications.

Cat. No.: HY-K0702 Antibody Labeling Kit-VF 488

MCE Antibody Labeling Kit-VF 488 can efficiently and covalently attach the VF 488 dye to antibodies.

Cat. No.: HY-KD1101 Green Fluorescent Rapid Labeling Kit (FITC）
Green Fluorescent Rapid Labelling Kit (FITC) enables green fluorescent labelling of proteins. Maximum excitation/ emission wavelengths: 488/515 nm. Based on NHS-ester chemistry, the NHS-ester-activated fluorescent dye reacts with primary amines in pH 7-9 solutions to form stable amide bonds, thereby achieving conjugation with antibodies/proteins. Typically, one IgG molecule can bind 2-8 molecules of FITC. The entire procedure can be completed within two hours.
Cat. No.: HY-KD1103 Red Fluorescent Rapid Labeling Kit (CY3）
Red Fluorescent Rapid Labelling Kit (CY3) enables red fluorescent labelling of proteins. Maximum excitation/ Emission Wavelength: 550/570 nm. Based on NHS ester chemistry, the NHS ester-activated fluorescent dye reacts with primary amines in the antibody/protein to be labelled at pH 7-9, forming stable amide bonds to achieve conjugation with the antibody/protein. Typically, one IgG molecule can bind 2–8 molecules of CY3. The entire experiment can be completed within 2 hours.
Cat. No.: HY-KD1104 Red Fluorescent Rapid Labeling Kit (AF555）
Red Fluorescent Rapid Labelling Kit (AF555) enables red fluorescent labelling of proteins. Maximum excitation/ Emission Wavelength: 555/565 nm. Based on NHS ester chemistry, the NHS ester-activated fluorescent dye reacts with primary amines in pH 7-9 solutions to form stable amide bonds with the target antibody/protein, achieving conjugation. Typically, one IgG molecule can bind 2-8 molecules of AF555. The entire procedure can be completed within two hours.
Cat. No.: HY-KD1106 Deep Red Fluorescent Rapid Labeling Kit (AF647）
Red Fluorescent Rapid Labelling Kit (AF647) enables red fluorescent labelling of proteins. Maximum excitation/ Emission Wavelength: 647/665 nm. Based on NHS ester chemistry, the NHS ester-activated fluorescent dye reacts with primary amines in the antibody/protein to be labelled at pH 7-9, forming stable amide bonds to achieve conjugation. Typically, one IgG molecule can bind 2-8 molecules of AF647. The entire procedure can be completed within two hours.
Cat. No.: HY-KD1107 Deep Red Fluorescent Rapid Labeling Kit (CY5）
Deep Red Fluorescent Rapid Labelling Kit (CY5) enables red fluorescent labelling of proteins. Maximum excitation/ emission wavelengths: 649/667 nm. Based on NHS ester chemistry, the NHS ester-activated fluorescent dye reacts with primary amines in the antibody/protein to be labelled at pH 7-9, forming stable amide bonds to achieve conjugation. Typically, one IgG molecule can bind 2–8 molecules of CY5. The entire experiment can be completed within 2 hours.
Cat. No.: HY-KD1109 NIR Red Fluorescent Rapid Labeling Kit (CY7）
Near-infrared Fluorescent Rapid Labelling Kit (CY7) enables red fluorescent labelling of proteins. Maximum excitation/ emission wavelengths: 750/773 nm. Based on NHS ester chemistry, the NHS ester-activated fluorescent dye reacts with primary amines in the antibody/protein to be labelled at pH 7-9, forming stable amide bonds to achieve conjugation. Typically, one IgG molecule can bind 2–8 molecules of CY7. The entire experiment can be completed within 2 hours.
Cat. No.: HY-KD1110 NIR Red Fluorescent Rapid Labeling Kit (CY7.5）
The Near-Infrared Fluorescence Rapid Labelling Kit (CY7.5) enables red fluorescent labelling of proteins. Maximum excitation/ emission wavelengths: 788/814 nm. Based on NHS ester chemistry, the NHS ester-activated fluorescent dye reacts with primary amines in the antibody/protein to be labelled at pH 7-9, forming stable amide bonds to achieve conjugation. Typically, one IgG molecule can bind 2-8 molecules of CY7.5. The entire procedure can be completed within two hours.
Cat. No.: HY-KD1115 DOTA Rapid Labeling Kit
The DOTA rapid labelling kit enables DOTA labelling of proteins. Based on NHS ester chemistry, NHS ester-activated fluorescent dyes react with primary amines on the antibody/protein to form stable amide bonds at pH 7–9, thereby achieving conjugation with the antibody/protein. Typically, a single IgG molecule can bind 2–8 DOTA molecules. The entire procedure can be completed within 2 hours.
Cat. No.: HY-KD1114 Nota Rapid Labeling Kit
The NOTA Rapid Labelling Kit enables NOTA labelling of proteins. Based on NHS ester chemistry, NHS ester-activated fluorescent dyes react with primary amines on the antibody/protein to be labelled in a pH 7-9 solution, forming stable amide bonds to achieve conjugation with the antibody/protein. Typically, a single IgG molecule can bind 2–8 NOTA molecules. The entire procedure can be completed within two hours.
Cat. No.: HY-KD1113 Biotinylated Rapid Labeling Kit
The Biotinylation Rapid Labelling Kit enables biotinylation of proteins. Based on NHS ester chemistry, the NHS ester-activated fluorescent dye reacts with primary amines in the antibody/protein to be labelled within a pH 7-9 solution, forming stable amide bonds to achieve conjugation with the antibody/protein. Typically, a single IgG molecule can bind 2-8 molecules of biotin. The entire procedure can be completed within two hours.
Cat. No.: HY-KD1112 Blue Fluorescent Rapid Labeling Kit (AF350）
TheBlue Fluorescence Rapid Labelling Kit (AF350) enables red fluorescent labelling of proteins. Maximum excitation/ emission wavelengths: 346/442 nm. Based on NHS ester chemistry, the NHS ester-activated fluorescent dye reacts with primary amines in the antibody/protein to be labelled at pH 7-9, forming stable amide bonds to achieve conjugation. Typically, one IgG molecule can bind 2-8 molecules of AF350. The entire procedure can be completed within two hours.
Cat. No.: HY-KD1111 NIR Red Fluorescent Rapid Labeling Kit (AF750）
Near-infrared Fluorescent Rapid Labelling Kit (AF750) enables red fluorescent labelling of proteins. Maximum excitation/ Emission Wavelength: 750/775 nm. Based on NHS ester chemistry, the NHS ester-activated fluorescent dye reacts with primary amines in pH 7-9 solutions to form stable amide bonds, thereby achieving conjugation with antibodies/proteins. Typically, one IgG molecule can bind 2-8 molecules of AF750. The entire procedure can be completed within two hours.
Cat. No.: HY-KD1102 Green Fluorescent Rapid Labeling Kit (AF488）
Green Fluorescent Rapid Labelling Kit (AF488) enables green fluorescent labelling of proteins. Maximum excitation/ emission wavelengths: 480/525 nm. Based on NHS ester chemistry, the NHS ester-activated fluorescent dye reacts with primary amines in pH 7-9 solutions to form stable amide bonds, thereby achieving conjugation with antibodies/proteins. Typically, one IgG molecule can bind 2-8 molecules of AF488. The entire procedure can be completed within two hours.
Cat. No.: HY-KD1105 Red Fluorescent Rapid Labeling Kit (AF594）
Red Fluorescent Rapid Labelling Kit (AF594) enables red fluorescent labelling of proteins. Maximum excitation/ Emission Wavelength: 594/617 nm. Based on NHS ester chemistry, the NHS ester-activated fluorescent dye reacts with primary amines in pH 7-9 solutions to form stable amide bonds, thereby achieving conjugation with antibodies/proteins. Typically, one IgG molecule can bind 2-8 molecules of AF594. The entire procedure can be completed within two hours.
Cat. No.: HY-KD1116 R-PE Rapid Labeling Kit
R-PE (R for phycoerythrin) is the brightest and most commonly used orange-red fluorescent protein probe in flow cytometry and immunofluorescence; it is particularly suitable for detecting low-expressing antigens. Excitation wavelengths: 488 nm (most common) and 561 nm; emission wavelength: 575 nm; flow cytometry channels: PE / 585/40 channels.