2-(Hydroxyethyl)n-octyl sulfide 2-(Octylthio)ethanol 2-Hydroxyethyl n-octyl sulfide 2-Hydroxyethyl octyl sulfide 3547-33-9 Ethanol, 2-(octylthio)- MGK 874 MGK Repellent 874 NSC163967 R 874 R-874 WLN: Q2S8 r-874 Phillips