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Update to Avantor’s response to the coronavirus (COVID-19) pandemic

HEPES-2-[4-(2-Hydroxyethyl)-1-piperazinyl]-ethanesulfonic acid free acid ≥99% (by titrimetric analysis on dry substance), ULTROL®, Calbiochem®, Millipore®

Supplier: EMD MILLIPORE (BIOSCIENCES)

M-Clarity™ quality level = MQ100

391338-25GM 391338-100GM 391338-1KG 391338-500GM 391338-5KG
80058-232EA 99.88 USD InStock
80058-232 80058-228 80058-230 80058-234 80058-236
HEPES-2-[4-(2-Hydroxyethyl)-1-piperazinyl]-ethanesulfonic acid free acid ≥99% (by titrimetric analysis on dry substance), ULTROL®, Calbiochem®, Millipore®
HEPES (2-[4-(2-hydroxyethyl)-1-piperazinyl]ethanesulphonic acid)
A zwitterionic N-substituted aminosulfonic acid buffer. HEPES has its maximum buffering capacity very near the pH of mammalian tissue fluids (pKa of 7.31 at 37°C). Exhibits no metal binding and has a small temperature dependent ΔpKa of -0.014/°C.

  • Maximum buffering capacity
  • Useful in the pH 6.8 to 8.2 range
  • pKa (25 °C) 7.5

Absorbance (1.0 M, H₂O, 260 nm):≤0.05
Absorbance (1.0 M, H₂O, 280 nm): ≤0.04

Precaución: Storage condition: OK to freeze


Formula: C₈H₁₈N₂O₄S
Storage Temperature: Ambient
 MDL Number: MFCD00006158
CAS Number: 7365-45-9
https://qa.digitalassets.avantorsciences.com/adaptivemedia/rendition?id=4cdc09c866676149941b93b2cac8d453175059a2&vid=2209af1f39056d621b3c53488e816f5332a603f5&prid=web&clid=SAPDAM
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Specification Test Results
Assay ≥99% dry basis (titration)
Form Crystalline powder
Chloride (Cl-) ≤0.01%
Sulfate (SO42-) ≤0.05%
Color White

 

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