Functional Group Reactive Labels for Microscopy

Microscopy offers great potential for qualitative and quantitative studies on the structure and function of cells and is uniquely suitable for probing living cells. The specimen is illuminated by light of a certain range of wavelengths, which may not necessarily be monochromatic, while viewing emitted (fluorescence) light of longer wavelengths. New methods, like confocal microscopy, provide better resolution (~1.4 improvement) and enable the measurement of various parameters. A point source and a point detector, both achieved by a pinhole are used, while light from other than the focal plane is defocused at the confocal aperture and thus detected only weakly.
Schematic diagram of a confocal microscope

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08450 7-Amino-4-methyl-3-coumarinacetic acid N-succinimidyl ester BioReagent, suitable for fluorescence, ≥90% (HPLC)
08445 7-Amino-4-methyl-3-coumarinylacetic acid BioReagent, suitable for fluorescence, ~90% (HPLC)
08658 8-Aminonaphthalene-1,3,6-trisulfonic acid disodium salt BioReagent, suitable for fluorescence, ≥90% (CE)
21888 5(6)-Carboxyfluorescein diacetate N-succinimidyl ester BioReagent, suitable for fluorescence, ≥90% (HPLC)
21878 5(6)-Carboxyfluorescein N-hydroxysuccinimide ester BioReagent, suitable for fluorescence, mixture of isomers, ≥80% (HPLC)
45245 Eosin 5-isothiocyanate ≥95.0% (UV)
46939 Fluorescein diacetate 5-maleimide suitable for fluorescence
L0259 Lucifer Yellow CH dilithium salt fluorescent stain
L0144 Lucifer Yellow CH dipotassium salt powder
L3510 Lucifer Yellow VS dilithium salt ~85%
15167 NIR-797 isothiocyanate suitable for fluorescence, ≥70% (coupling to amines)
R1755 Rhodamine B isothiocyanate mixed isomers, BioReagent, suitable for protein labeling
283924 Rhodamine B isothiocyanate mixed isomers
S3388 Sulforhodamine 101 acid chloride Technical grade
86186 Sulforhodamine B acid chloride suitable for fluorescence, technical
87918 Tetramethylrhodamine isothiocyanate mixed isomers suitable for fluorescence, mixture of isomers