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C2278

CAPSO

≥99% anhydrous basis (titration)

Synonym(s):

3-(Cyclohexylamino)-2-hydroxy-1-propanesulfonic acid, CAPSO Free Acid

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About This Item

Empirical Formula (Hill Notation):
C9H19NO4S
CAS Number:
Molecular Weight:
237.32
UNSPSC Code:
12161700
NACRES:
NA.25
PubChem Substance ID:
MDL number:
Beilstein/REAXYS Number:
5939234
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Quality Segment

assay

≥99% anhydrous basis (titration)

form

crystalline powder

pH

2.5-4.0

useful pH range

8.9-10.3

pKa (25 °C)

9.6

solubility

water: 0.111 g/mL, clear, colorless

application(s)

diagnostic assay manufacturing

SMILES string

OC(CNC1CCCCC1)CS(O)(=O)=O

InChI

1S/C9H19NO4S/c11-9(7-15(12,13)14)6-10-8-4-2-1-3-5-8/h8-11H,1-7H2,(H,12,13,14)

InChI key

INEWUCPYEUEQTN-UHFFFAOYSA-N

General description

CAPSO is a useful secondary standard buffer. Second dissociation constant pK2 value of CAPSO has been measured. Useful pH range for CAPSO is 8.9 - 10.3.

Application

CAPSO was used as biological buffer in the following studies:
  • To maintain pH 9 during water leach test for the analysis of high-carbon coal fly ash-soil mixtures.
  • Chemiluminescent in situ hybridization using soybean peroxidase-labeled peptide nucleic acid (PNA) probes.[1] I
  • Preparation of planar bilayer lipid membranes.[2]
It may be employed as buffer for the electrophoretic analyses in non-denaturing gels, to investigate macromolecular self-association of ADP-ribosyltransferase protein in solution.[3]

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This Item
850501P220202C4695
assay

≥99% anhydrous basis (titration)

assay

>98% (TLC)

assay

>98% (TLC)

assay

≥98.0% (TLC)

Quality Level

200

Quality Level

-

Quality Level

100

Quality Level

200

form

crystalline powder

form

powder

form

solid

form

powder

application(s)

diagnostic assay manufacturing

application(s)

-

application(s)

-

application(s)

-

solubility

water: 0.111 g/mL, clear, colorless

solubility

-

solubility

water: soluble

solubility

H2O: 0.1 M at 20 °C, clear, colorless

pH

2.5-4.0

pH

-

pH

-

pH

-


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Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)



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Questions

1–3 of 3 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  3. Hallo, ich würde Ablaufdatum brauchen? Danke

    1 answer
    1. This product does not contain an expiration date or recommended retest date. Products with no expiration date or recommended retest date should be routinely inspected by customers to ensure they perform as expected. These products are also subject to a one year warranty from the date of shipment. For more information you may access the "Product Dating Information" document under "ADDITIONAL USEFUL DOCUMENTS ABOUT OUR PRODUCTS" at the bottom of the Quality Services page with this link: https://www.sigmaaldrich.com/US/en/life-science/quality-and-regulatory-management/quality-services

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