HEPBS

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HEPBS
Chemical structure of HEPBS
Names
Preferred IUPAC name
4-[4-(2-Hydroxyethyl)piperazin-1-yl]butane-1-sulfonic acid
Other names
HEPBS
Identifiers
3D model (JSmol)
  • InChI=1S/C10H22N2O4S/c13-9-8-12-6-4-11(5-7-12)3-1-2-10-17(14,15)16/h13H,1-10H2,(H,14,15,16)
    Key: LOJNFONOHINEFI-UHFFFAOYSA-N
  • C1CN(CCN1CCCCS(=O)(=O)O)CCO
Properties
C10H22N2O4S
Molar mass 266.356 g/mol
Appearance White crystalline powder
Density 1.25 g/cm3 (predicted)
Melting point 211–216 °C (412–421 °F; 484–489 K)
Acidity (pKa) 8.3
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
Irritant
GHS labelling:
Warning
H315, H319, H335
P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
Flash point Non-flammable
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

HEPBS (N-(2-Hydroxyethyl)piperazine-N'-(4-butanesulfonic acid)) is a zwitterionic organic chemical buffering agent; one of Good's buffers. HEPBS and HEPES have very similar structures and properties, HEPBS also having an acidity (pKa) in the physiological range (7.6-9.0 useful range). This makes it possible to use it for cell culture work.

HEPBS 1H NMR spectrum.

References[edit]