Sulphorhodamine 101 ~95 % (dye content), Sigma-Aldrich®

Supplier: SIGMA-ALDRICH MICROSCOPY

Synonyms: Sulforhodamine 101, Texas Red, SR 101, Sulforhodamine 640, 9-(2,4-Disulphophenyl)-2,3,6,7,12,13,16,17-octahydro-1H,5H,11H,15H-xantheno[2,3,4-ij:5,6,7-i'j']diquinolizin-18-ium inner salt

M-Clarity™ quality level = MQ100

S7635-100MG S7635-500MG S7635-50MG
S7635-100MGEA 202 GBP
S7635-100MG S7635-500MG S7635-50MG
Sulphorhodamine 101 ~95 % (dye content), Sigma-Aldrich®
Sulphorhodamine 101

Sulforhodamine 101 is a red fluorescent dye. It is water-soluble, amphoteric rhodamine.


  • Sulforhodamine 101 has been used
  • to label astrocytes
  • in quantitative polymerase chain reaction (PCR)
  • to determine the degree of disintegration in tissue sample


Sulforhodamine 101 can be specifically used as a marker of astroglia in the neocortex. It is commonly used for brain imaging. Studies suggest that sulforhodamine 101 may be used as an epileptogenic agent.

Formula: C₃₁H₃₀N₂O₇S₂
MW: 606,708 g/mol
Storage Temperature: Room Temperature
MDL Number: MFCD00012407
CAS Number: 60311-02-6
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Specification Test Results

Appearance (Colour) Dark Green to Brown to Black
Appearance (Form) Powder
Infrared spectrum Conforms to Structure
Carbon (dry basis) 57.5 - 65.0 %
Nitrogen (dry basis) 4.2 - 5.0 %
Wavelength 573 - 579 nm
Extinction Coefficient ≥105000
In Ethanol
Water (by Karl Fischer) %
Solubility (Colour) Conforms
Dark Pink (C = 1mg/ml; Methanol)

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