C21H34O2

The molecular formula C21H34O2 (molar mass : 318.49 g/mol, exact mass : 318.25588) may refer to:


 * Allopregnanolone, a neurosteroid
 * Bilobol, an alkylresorcinol found in Ginkgo biloba fruits
 * BSPP, a drug
 * CP 47,497, an agonist of cannabinoid receptor
 * Epipregnanolone
 * Isopregnanolone
 * Methasterone, an anabolic steroid
 * Pregnanolone, a neurosteroid