CAS Number: 1802078-27-8. This is from peptide screening. The metabolic hormone glucagon stimulates the movement of glucose from the liver into the bloodstream. Its main partner, insulin, has a complementary role, to oppose the hepatic glucose‐mobilizing effects of glucagon while promoting the movement of glucose out of the bloodstream into glucose‐utilizing tissues such as muscle and adipose. When in balance, the two hormones effectively maintain euglycemia under variable nutritional and metabolic conditions.