neutral red

Neutral red is a vital dye, is used as an indicator and biological stain.

Nile Red (Nile Blue A oxazone) is a strongly fluorescent stain used for the detection of intracellular lipid droplets in the presence of a hydrophobic environment.

Cyanine3 NHS Ester Chloride is an amine-reactive orange-red fluorescent dye and the NHS ester derivative of Cyanine3, supplied as a chloride salt. Its N-hydroxysuccinimide (NHS) ester reacts efficiently with primary amines on proteins, antibodies, or other biomolecules under neutral to slightly basic conditions, forming stable amide bonds. This dye is widely used for cellular labeling, flow cytometry, and biomolecular staining studies.

BODIPY 650/665 (NHS ester) is a far-red/near-infrared fluorescent dye with excitation and emission wavelengths of 646/660 nm. It is used to label neutral lipids in live or fixed cells and is commonly employed in studies of adipocyte differentiation and lipid metabolism. NHS ester can specifically bind to primary amine groups (-NH₂) on molecules such as proteins and peptides, forming stable amide bonds.

BODIPY 558/568 C12 (Red C12) is an intracellular BODIPY dye that crosses cell membranes and is an orange-red fluorescent fatty acid that can be used to label living cells by localizing on intracellular neutral lipids for specific staining.

BODIPY 650/665 4C (BODIPY 650/665 analogue) is an analogue of BODIPY 650/665 in which the carbon chain linked to the NHS ester is four carbon atoms long. BODIPY 650/665 is a far-red/near-infrared fluorescent dye that can be used to label neutral lipids in live or fixed cells.

Sulfo-Cyanine5.5 carboxylic acid (CI Pigment violet 32) is a water-soluble, far-red emitting fluorophore. With four sulfo groups, this dye is negatively charged at neutral pH and highly hydrophilic. As a cyanine dye, Sulfo-Cyanine5.5 exhibits low pH-dependent fluorescence and possesses a high extinction coefficient.