C9H10O5

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The molecular formula C₉H₁₀O₅ (molar mass: 198.17 g/mol, exact mass 198.052823) may refer to:

• Danshensu
• Ethyl gallate, an antioxidant food additive
• Syringic acid, a polyphenol
• Vanillylmandelic acid, a catecholamine

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