4-hydroxybenzaldehyde + hydrogen cyanide => (S)-4-hydroxymandelonitrile
4-hydroxybenzaldehyde + hydrogen cyanide => (s)-4-hydroxymandelonitrile
4-hydroxybenzaldehyde + hydrogen cyanide => (S)-4-hydroxymandelonitrile
4-hydroxybenzaldehyde + hydrogen cyanide => (s)-4-hydroxymandelonitrile