Molecule
Name
HEPES
IUPAC name
2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid
Secondary names
4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid
InChI
InChI=1S/C8H18N2O4S/c11-7-5-9-1-3-10(4-2-9)6-8-15(12,13)14/h11H,1-8H2,(H,12,13,14)
InChI key
JKMHFZQWWAIEOD-UHFFFAOYSA-N
CAS number
7365-45-9
Structure and atomic composition
Formula
$HOC_2H_4(C_4N_2H_8)_{cycl}C_2H_4SO_2OH$
Chemical formula
HOC2H4(C4N2H8)C2H4SO3H
Structural formula
[OH][CH2][CH2][N1][CH2][CH2][NH+]([CH2][CH2][S](=O)(=O)[O-])[CH2][C1H2]
Charge
0
Unpaired electrons
0
  Atom Name Number
$C$ Carbon 8
$O$ Oxygen 4
$N$ Nitrogen 2
$H$ Hydrogen 18
$S$ Sulfur 1
Relations
  • no
Isotope mixture type
terrestrial abundance
Spin type
equilibrated
Molar mass
238.3012 $g/mol$
State STP
solid
Protic
protic
Polarity
polar
Molecule symmetry
unknown
Case
complex
Chemical bonds
  Bond Number
$-O-H$ 2
$\geq C-H$ 16
$\geq C-N<$ 6
$\geq C-C \leq$ 4
$\geq C-O-$ 1
$\geq C-S \ll$ 1
$-\gg S-O-$ 1
$\geqq S=O$ 2