C5 H4 N4 S 152.177 [1,3]thiazolo[4,5-b]pyrazin-2-amine N 0 Corina N 2026-07-23 14UN N 2026-07-31 RCSB REL HETAIN A1DNX non-polymer N1 0 7.631 62.682 8.961 1 N N1 A1DNX N 3.191 0.700 0.001 1 N N C1 0 8.169 61.838 8.074 1 Y C1 A1DNX N 1.852 0.376 0.002 2 N C N2 0 9.489 61.624 7.984 1 Y N2 A1DNX N 0.886 1.232 -0.000 3 N N C2 0 9.792 60.863 6.831 1 Y C2 A1DNX N -0.372 0.762 0.000 4 N C N3 0 11.034 60.575 6.357 1 Y N3 A1DNX N -1.528 1.449 -0.002 5 N N C3 0 11.093 59.841 5.225 1 Y C3 A1DNX N -2.681 0.814 -0.002 6 N C C4 0 9.944 59.405 4.571 1 Y C4 A1DNX N -2.725 -0.569 0.001 7 N C N4 0 8.679 59.698 5.020 1 Y N4 A1DNX N -1.602 -1.264 0.003 8 N N C5 0 8.609 60.417 6.149 1 Y C5 A1DNX N -0.431 -0.640 0.002 9 N C S1 0 7.155 60.932 6.925 1 Y S1 A1DNX N 1.217 -1.264 -0.003 10 N S H1 0 8.357 63.097 9.510 1 N H1 A1DNX N 3.464 1.631 -0.000 11 N H H2 0 7.128 63.398 8.477 1 N H2 A1DNX N 3.860 -0.002 0.007 12 N H H3 0 12.059 59.585 4.815 1 N H3 A1DNX N -3.602 1.379 -0.003 13 N H H4 0 10.051 58.812 3.674 1 N H4 A1DNX N -3.676 -1.080 0.002 14 N H N 1 N sing Y 2 N doub Y 3 N sing Y 4 N doub Y 5 N sing Y 6 N doub Y 7 N sing Y 8 N doub Y 9 N sing Y 10 N sing Y 11 N sing N 12 N sing N 13 N sing N 14 N sing N 15 N sing RCSB RCSB Nc1nc2nccnc2s1 InChI=1S/C5H4N4S/c6-5-9-3-4(10-5)8-2-1-7-3/h1-2H,(H2,6,7,9) IGXMPTMLSAOJBY-UHFFFAOYSA-N Nc1sc2nccnc2n1 Nc1sc2nccnc2n1 c1cnc2c(n1)nc(s2)N c1cnc2c(n1)nc(s2)N [1,3]thiazolo[4,5-b]pyrazin-2-amine [1,3]thiazolo[4,5-b]pyrazin-2-amine