C19H28O

The molecular formula C19H28O may refer to:


 * Androstenone, or 5α-androst-16-en-3-one
 * 5α-Androst-2-ene-17-one
 * Androstadienol (5,16-androstadien-3β-ol)
 * 4,16-Androstadien-3β-ol