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Biotium developed CPMTS as an alternative to the widely used thiol-reactive coumarin dye CPM (#91010).

Product Attributes


384/469 nm (reaction product)

Catalog #
5 mg
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Product Description

Biotium developed CPMTS as an alternative to the widely used thiol-reactive coumarin dye CPM (#91010). CPMTS and CPM have nearly identical absorption and emission spectra. However, CPMTS contains a MTS group, which could make the dye more advantageous than CPM for sulfhydryl labeling because of the high selectivity and reactivity of MTS reagents toward thiol groups. This product replaces discontinued catalog number 91034.

  • Off-white solid soluble in DMF or DMSO
  • Store desiccated at -20°C and protect from light
  • C27H33N3O6S2
  • MW: 560




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