4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID non-polymer HETAIN C8 H18 N2 O4 S HEPES 0 1999-07-08 2020-06-17 N REL 238.305 EPE N N 1CXQ RCSB N1 N 0 1 N N N 61.652 47.337 51.616 -0.820 -0.330 0.258 N1 EPE 1 C2 C 0 1 N N N 63.051 46.905 51.967 -1.669 0.557 1.061 C2 EPE 2 C3 C 0 1 N N N 63.962 47.257 50.796 -1.693 0.072 2.511 C3 EPE 3 N4 N 0 1 N N N 63.551 46.544 49.578 -0.342 0.147 3.079 N4 EPE 4 C5 C 0 1 N N N 62.151 46.910 49.248 0.507 -0.740 2.276 C5 EPE 5 C6 C 0 1 N N N 61.218 46.554 50.402 0.531 -0.255 0.826 C6 EPE 6 C7 C 0 1 N N N 64.368 46.893 48.385 -0.416 -0.441 4.423 C7 EPE 7 C8 C 0 1 N N N 65.854 46.721 48.613 0.966 -0.395 5.076 C8 EPE 8 O8 O 0 1 N N N 66.240 45.400 48.979 1.402 0.961 5.174 O8 EPE 9 C9 C 0 1 N N N 60.685 46.992 52.709 -0.746 0.258 -1.085 C9 EPE 10 C10 C 0 1 N N N 60.870 47.974 53.893 0.128 -0.621 -1.980 C10 EPE 11 S S 0 1 N N N 59.559 47.692 55.090 0.219 0.104 -3.640 S EPE 12 O1S O 0 1 N N N 59.732 48.694 56.115 -1.019 -0.001 -4.327 O1S EPE 13 O2S O 0 1 N N N 59.737 46.327 55.596 0.986 1.301 -3.646 O2S EPE 14 O3S O 0 1 N N N 58.331 47.863 54.358 1.110 -0.870 -4.397 O3S EPE 15 1H2 H 0 1 N N N 63.405 47.334 52.932 -2.683 0.551 0.659 H21 EPE 16 2H2 H 0 1 N N N 63.111 45.828 52.251 -1.271 1.571 1.024 H22 EPE 17 1H3 H 0 1 N N N 64.013 48.358 50.630 -2.044 -0.959 2.543 H31 EPE 18 2H3 H 0 1 N N N 65.034 47.072 51.038 -2.367 0.702 3.093 H32 EPE 19 1H5 H 0 1 N N N 62.060 47.982 48.958 1.520 -0.734 2.677 H51 EPE 20 2H5 H 0 1 N N N 61.817 46.449 48.288 0.109 -1.754 2.313 H52 EPE 21 1H6 H 0 1 N N N 61.169 45.456 50.592 1.204 -0.885 0.244 H61 EPE 22 2H6 H 0 1 N N N 60.143 46.711 50.150 0.881 0.775 0.794 H62 EPE 23 1H7 H 0 1 N N N 64.033 46.316 47.491 -0.748 -1.476 4.348 H71 EPE 24 2H7 H 0 1 N N N 64.136 47.925 48.032 -1.123 0.124 5.029 H72 EPE 25 1H8 H 0 1 N N N 66.427 47.061 47.719 1.673 -0.961 4.470 H81 EPE 26 2H8 H 0 1 N N N 66.220 47.457 49.365 0.911 -0.832 6.073 H82 EPE 27 HO8 H 0 1 N N N 67.172 45.292 49.122 2.275 0.945 5.590 HO8 EPE 28 1H9 H 0 1 N N N 59.631 46.964 52.345 -1.748 0.323 -1.509 H91 EPE 29 2H9 H 0 1 N N N 60.772 45.927 53.027 -0.313 1.256 -1.022 H92 EPE 30 1H10 H 0 0 N N N 61.885 47.904 54.349 1.131 -0.687 -1.557 H101 EPE 31 2H10 H 0 0 N N N 60.921 49.037 53.560 -0.304 -1.620 -2.044 H102 EPE 32 3HOS H 0 0 N N N 57.638 47.714 54.990 1.194 -0.529 -5.298 HOS3 EPE 33 sing N N 1 sing N N 2 sing N N 3 sing N N 4 sing N N 5 sing N N 6 sing N N 7 sing N N 8 sing N N 9 sing N N 10 sing N N 11 sing N N 12 sing N N 13 sing N N 14 sing N N 15 sing N N 16 sing N N 17 sing N N 18 sing N N 19 sing N N 20 sing N N 21 sing N N 22 sing N N 23 sing N N 24 sing N N 25 sing N N 26 sing N N 27 sing N N 28 sing N N 29 doub N N 30 doub N N 31 sing N N 32 sing N N 33 O=S(=O)(O)CCN1CCN(CCO)CC1 OCCN1CCN(CC1)CC[S](O)(=O)=O OCCN1CCN(CC1)CC[S](O)(=O)=O C1CN(CCN1CCO)CCS(=O)(=O)O C1CN(CCN1CCO)CCS(=O)(=O)O 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) JKMHFZQWWAIEOD-UHFFFAOYSA-N 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid RCSB RCSB PDBE