HEPBS
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.
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| Names | |
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| IUPAC name | |
| Other names
HEPBS | |
| Identifiers | |
3D model (JSmol) |
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PubChem CID |
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| 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 | |
| Main hazards | Irritant |
| GHS Signal word | Warning |
| H315, H319, H335 | |
| P261, P264, P271, P280, P302+352, P304+340, P305+351+338, P312, P321, P332+313, P337+313, P362, P403+233, 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). | |
| Infobox references | |
References
- "Compound Summary for CID 9965191". PubChem. 2006-10-25.
- "HEPBS, 99% (HPLC)". AKSci. 2017-07-23.
- "HEPBS (CAS 161308-36-7)". Santa Cruz Biotechnology.
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