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HEPES-2-[4-(2-Hydroxyethyl)-1-piperazinyl]-ethanesulfonic acid ≥99.5% (by titrimetric analysis), cGMP-manufactured
HEPES-2-[4-(2-Hydroxyethyl)-1-piperazinyl]-ethanesulfonic acid ≥99.5% (by titrimetric analysis), cGMP-manufactured
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HEPES-2-[4-(2-Hydroxyethyl)-1-piperazinyl]-ethanesulfonic acid ≥99.5% (by titrimetric analysis), cGMP-manufactured

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Specification Test Results

  • Assay (titration):
    min. 99.5 %
  • pH OF A 5% AQUEOUS SOLUTION:
    4,5-6,5
  • pKa @ 25 C:
    7,35-7,75
  • Absorbance @ 260 nm (0.05 M in water):
    0,05 AU
  • Absorbance @ 280 nm (0.05 M in water):
    0,03 AU
  • WATER (KF):
    max. 0,5%
  • HEAVY METALS (as Pb):
    max. 5ppm
  • INSOLUBLE MATTER:
    max. 0,1 %
  • TOTAL AEROBIC MICROBIAL COUNT:
    max. 100cfu/g
  • TOTAL YEAST AND MOLD COUNT:
    max. 100cfu/g
  • BACTERIAL ENDOTOXIN:
    as reported

Specification Test Results

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