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Thermo Scientific™ Pierce™ TCEP·HCl

Reduce protein and peptide disulfide bonds using this thiol-free, pure, crystalline tris (2-carboxyethyl) phosphine hydrochloride, TCEP (CAS 5961-85-3).

Manufacturer: thermo scientific™  20491

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Catalog No. PI20491

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Description & Specifications


Quantity 10g
Description Pierce TCEP-HCl
Sufficient For Preparing nearly 700mL of 50mM solution
Formulation Crystalline powder of Tris(2-carboxyethyl)phosphine hydrochloride

Thermo Scientific™ Pierce TCEP-HCl is pure, crystalline Tris(2-carboxyethyl)phosphine hydrochloride, a thiol-free compound that is highly effective at reducing protein and peptide disulfide bonds, as well as being odorless and stable.


  • Reduces even the most stable water-soluble alkyl disulfides
  • Effective at room temperature and pH 5 in less than five minutes
  • Does not require removal before reaction with maleimide or haloacetyl compounds
  • Water solubility of 310g/L
  • Resistant to air oxidation; nonvolatile and nonreactive toward other functional groups in proteins