... BP, USP Antibacterial Erythromycin Base BP Chemical Name: ErythromycinCAS: 114-07-8EINECS: 204-040-1Molecular formula: C37H67NO13Structure: AppearanceWhite or slightly yellow ... .Storage: Protected from light. 100kg Erythromycin Base, Erythromycin, [CAS 114-07-8], EINECS 204-040-1