Date published: 2025-10-19

1-800-457-3801

SCBT Portrait Logo
Seach Input

CAPS (CAS 1135-40-6)

5.0(1)
Write a reviewAsk a question

Alternate Names:
3-(Cyclohexylamino)-1-propanesulfonic acid
Application:
CAPS is used to formulate CAPS buffer, a zwitterionic buffer useful in the range of pH 7.9-11.1
CAS Number:
1135-40-6
Purity:
≥98%
Molecular Weight:
221.31
Molecular Formula:
C9H19NO3S
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

QUICK LINKS

CAPS (N-cyclohexyl-3-aminopropanesulfonic acid) buffer salt is used to formulate CAPS buffer, a zwitterionic buffer that is useful in the range of pH 7.9-11.1. CAPS buffer is widely used in Western and immunoblotting experiments as well as protein sequencing and identification. Used in the electrotransfer of proteins to PVDF (sc-3723) or nitrocellulose membranes (sc-3718, sc-3724). The high pH of this buffer makes it useful for the transfer of proteins with a pI > 8.5. CAPS is not one of the original Good′s buffers, although it has a similar structure to the other propanesulfonic acids and was selected as a highly water soluble buffering reagent with an optimum buffering pH of 10.4 and minimal reactivity with enzymes or proteins, minimal salt effects. Also available: CAPSO (sc-239475) CAPSO sodium salt (sc-285280)


CAPS (CAS 1135-40-6) References

  1. Direct monitoring of the expression of the green fluorescent protein-extracellular signal-regulated kinase 2 fusion protein in transfected cells using capillary electrophoresis with laser-induced fluorescence detection.  |  Yoon, S., et al. 2002. J Chromatogr A. 976: 87-93. PMID: 12462599
  2. Simultaneous determination of 5-hydroxyindoles and catechols by high-performance liquid chromatography with fluorescence detection following derivatization with benzylamine and 1,2-diphenylethylenediamine.  |  Fujino, K., et al. 2003. J Chromatogr A. 1012: 169-77. PMID: 14521313
  3. Analysis of tryptophan and tyrosine in cerebrospinal fluid by capillary electrophoresis and 'ball lens' UV-pulsed laser-induced fluorescence detection.  |  Bayle, C., et al. 2003. J Chromatogr A. 1013: 123-30. PMID: 14604114
  4. The role of CAPS buffer in expanding the crystallization space of the nucleotide-binding domain of the ABC transporter haemolysin B from Escherichia coli.  |  Zaitseva, J., et al. 2004. Acta Crystallogr D Biol Crystallogr. 60: 1076-84. PMID: 15159567
  5. Optimised two-dimensional electrophoresis procedures for the protein characterisation of structural tissues.  |  Hopkinson, A., et al. 2005. Proteomics. 5: 1967-79. PMID: 15816006
  6. On-line enhancement and separation of nanoparticles using capillary electrophoresis.  |  Lin, KH., et al. 2007. J Chromatogr A. 1161: 314-21. PMID: 17559859
  7. A high-efficiency capillary electrophoresis-based method for characterizing the sizes of Au nanoparticles.  |  Liu, FK. 2007. J Chromatogr A. 1167: 231-5. PMID: 17850805
  8. Stacking enhanced determination of steroids by CE.  |  Bykova, L. and Holland, LA. 2008. Electrophoresis. 29: 3794-800. PMID: 18850649
  9. Evaluating binuclear copper(II) complexes for glycoside hydrolysis.  |  Striegler, S., et al. 2010. Inorg Chem. 49: 2639-48. PMID: 20166683
  10. Effect of zwitterionic buffers on measurement of small masses of protein with bicinchoninic acid.  |  Kaushal, V. and Barnes, LD. 1986. Anal Biochem. 157: 291-4. PMID: 3777432
  11. The effect of the dimeric and multimeric forms of fibronectin on the adhesion and growth of primary glomerular cells.  |  Oberley, TD., et al. 1983. Exp Cell Res. 145: 265-76. PMID: 6861897
  12. Frog striated muscle is permeable to hydroxide and buffer anions.  |  Venosa, RA., et al. 1994. J Membr Biol. 139: 57-74. PMID: 8071988
  13. Contribution of capillary zone electrophoresis to the analysis of cecal mucins.  |  Gómez Treviño, M., et al. 1996. J Capillary Electrophor. 3: 287-94. PMID: 9384722
  14. Sensitive determination of arsenite by capillary zone electrophoresis with direct photometric detection.  |  Vanifatova, NG., et al. 1997. J Capillary Electrophor. 4: 91-6. PMID: 9624575
  15. [Determination of sennoside A and sennoside B in formulation using capillary electrophoresis].  |  Satoh, K., et al. 1999. Yakugaku Zasshi. 119: 88-92. PMID: 9922712

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

CAPS, 25 g

sc-216090B
25 g
$36.00

CAPS, 100 g

sc-216090
100 g
$80.00

CAPS, 250 g

sc-216090C
250 g
$132.00

CAPS, 1 kg

sc-216090A
1 kg
$438.00

CAPS, 2.5 kg

sc-216090D
2.5 kg
$989.00

CAPS, 5 kg

sc-216090E
5 kg
$1892.00