Ionomycin (free acid) Product Overview Alternate Name/Synonyms: Appearance: Off-white to yellow solid Formulation: N/A CAS Number: 56092-81-01 Molecular Formula: C₄₁H₇₂O₉ Molecular Weight: 709.02 Purity: ≥97% Solubility: DMSO Storage Temp.: -20°C Shipping Conditions: RT Description: Antibiotic that acts as a potent and selective calcium ionophore; more effective than A23187. Ionomycin binds Ca2+ in the 7.0-9.5 pH range with the resulting complex exhibiting intense UV absorption. Ionomycin induces apoptosis in immature B cell lines and in cultured embryonic rat cortical neurons. More mature B cell lines do not undergo apoptosis, but are arrested in the G1 phase of the cell cycle. Handling: Protect from light and moisture USAGE: For Research Use Only! Not For Use in Humans.