CAPS (3-(cyclohexylamino)propanesulphonic acid), white powder

Supplier: MP Biomedicals

Synonyms: 3-Cyclohexylaminopropanesulphonic acid

0210143525 0210143580 0210143583 0210143591
ICNA0210143525EA 34.5 GBP
ICNA0210143525 ICNA0210143580 ICNA0210143583 ICNA0210143591
CAPS (3-(cyclohexylamino)propanesulphonic acid), white powder
CAPS (3-(Cyclohexylamino)propanesulphonic acid)

CAPS is a zwitterionic biological buffer which has minimal reactivity with enzymes or proteins and minimal salt effects. CAPS buffer is widely used in Western and immunoblotting experiments as well as protein sequencing and identification. The high pH of this buffer makes it useful for the transfer of proteins with a pI > 8,5.


  • ΔpK/ΔT: - 0,0322


CAPS has been used to study pH-dependent processes in enzymology and as an eluent buffer component in the separation of basic drugs by HPLC.


Very soluble in water (1 M - clear, colorless solution).


Caution: Research Use Only (RUO).

Formula: C₆H₁₁NH(CH₂)₃SO₃H
MW: 221,32 g/mol
MDL Number: MFCD00003837
CAS Number: 1135-40-6

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Specification Test Results

Identity Test Passes
FTIR Conforms to Standard
pH (1% aq soln) 5,0 - 6,3
pka 10,4 (25 °C) (Lit.)
Refractive Index 1,52
Sterilisation of Solutions Autoclave

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