1H-imidazo[4,5-b]pyrazine

• CAT Number: L020834
• CAS Number: 273-94-9
• Molecular Formula: C5H4N4
• Molecular Weight: 120.11
• Purity: ≥95%
• IUPAC Name: 1H-imidazo[4,5-b]pyrazine
• InChI: InChI=1S/C5H4N4/c1-2-7-5-4(6-1)8-3-9-5/h1-3H,(H,6,7,8,9)
• InChIKey: ZKAMEFMDQNTDFK-UHFFFAOYSA-N
• SMILES: C1=CN=C2C(=N1)NC=N2

1H-imidazo[4,5-b]pyrazine（Cat No.:L020834）is a fused heterocyclic compound composed of an imidazole ring joined with a pyrazine ring, forming a bicyclic aromatic system with nitrogen-rich character. This structure offers planarity, rigidity, and multiple hydrogen-bonding sites, making it highly valuable in medicinal chemistry and drug discovery. Its electron-deficient core supports interactions with biological targets, including kinases and receptors. The compound serves as a versatile scaffold for developing pharmaceuticals, agrochemicals, and functional materials. Its fused-ring system allows for regioselective substitution and is often explored in the synthesis of bioactive heterocycles and fluorescent probes.