T1378
Sigma 7-9®
≥99% (titration), crystalline, Sigma 7-9®
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Synonym(s):
Trizma® base, 2-Amino-2-(hydroxymethyl)-1,3-propanediol, THAM, Tris base, Tris(hydroxymethyl)aminomethane, Trometamol
Linear Formula:
NH2C(CH2OH)3
CAS Number:
Molecular Weight:
121.14
Beilstein:
741883
EC Number:
MDL number:
UNSPSC Code:
12352104
PubChem Substance ID:
NACRES:
NA.25
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description
aminopeptidase substrate
Quality Level
Assay
≥99% (titration)
form
crystalline
storage condition
dry at room temperature
technique(s)
ELISA: suitable
flow cytometry: suitable
immunohistochemistry: suitable
impurities
≤0.5% water (Karl Fischer)
color
white to off-white
pH
10.5-12
useful pH range
7-9
pKa (25 °C)
8.1
bp
219-220 °C/10 mmHg (lit.)
mp
167-172 °C (lit.)
solubility
water: 0.667 g/mL, clear, colorless to faintly yellow
absorption
≤0.4 at 290 at 40%
application(s)
clinical research
diagnostic assay manufacturing
life science and biopharma
sample preparation
SMILES string
NC(CO)(CO)CO
InChI
1S/C4H11NO3/c5-4(1-6,2-7)3-8/h6-8H,1-3,5H2
InChI key
LENZDBCJOHFCAS-UHFFFAOYSA-N
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General description
Sigma 7-9® also known as Trizma base or tris(hydroxymethyl)aminomethane, is a versatile biological buffer used in various applications, such as protein freezing, electrophoresis, and the preparation of buffer solutions such as TAE and TBE. With a pKa of 8.06, Tris is particularly valuable in labs working within the typical physiological pH range of living organisms (pH 7.0-9.0). It is also commonly employed in combination with other buffering agents to precisely adjust solution pH.
Additionally, Tris aids in enhancing the permeability of cell membranes. This compound is indispensable in laboratories where it is utilized to prepare buffers compatible with biological fluids, serve as a standard pH solution, and facilitate procedures such as lactate dehydrogenase assays, in situ hybridization, and protein extraction from cells.
Additionally, Tris aids in enhancing the permeability of cell membranes. This compound is indispensable in laboratories where it is utilized to prepare buffers compatible with biological fluids, serve as a standard pH solution, and facilitate procedures such as lactate dehydrogenase assays, in situ hybridization, and protein extraction from cells.
Application
Sigma 7-9® has been used:
- as a buffer for sample preparation in a study involving Enzyme-linked immunosorbent assay (ELISA)
- as a buffer for sample preparation in research involving immunohistochemistry and immunofluorescence
Features and Benefits
- Suitable for Biological and Biochemical Research
- Effective Buffering from pH 7-9 (25 °C) with a pKa of 8.1 (25 °C)
Other Notes
The pH values of all buffers are temperature- and concentration-dependent. For Tris buffers, pH increases about 0.03 unit per °C decrease in temperature, and decreases 0.03-0.05 unit per ten-fold dilution.
For precise applications, use a carefully calibrated pH meter with a glass/calomel combination electrode.
For precise applications, use a carefully calibrated pH meter with a glass/calomel combination electrode.
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Legal Information
Sigma 7-9 is a registered trademark of Merck KGaA, Darmstadt, Germany
Trizma is a registered trademark of Merck KGaA, Darmstadt, Germany
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