C10H9NO2
# C10H9NO2

The molecular formula $C_{10}H_9NO_2$ (molar mass: 175.18 g/mol, exact mass: 175.0633 u) may refer to:

* Gentianine, a pyridine-derived alkaloid found in some plants
* Indole-3-acetic acid, the most common naturally occurring plant hormone of the auxin class
