Chemistry:C15H11O5

The molecular formula C₁₅H₁₁O₅ (or C₁₅H₁₁O₅⁺, molar mass: 271.24 g/mol, exact mass: 271.0606 u) may refer to:

• Fisetinidin, an anthocyanidin
• Luteolinidin, an anthocyanidin
• Pelargonidin, an anthocyanidin