7-methyl-4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine; CAS No.: 1630906-29-4; 7-Methyl-4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine, a fused pyrazolopyrazine, is a heterocycle for allosteric modulator discovery. ChemShuttle s Library of Compounds includes small, planar heterocycles for fragment-based screening against protein-protein interaction targets.