allüülisotiotsünaat
a pungent, colorless to pale-yellow liquid; soluble in alcohol, slightly soluble in water; irritating odor; boiling point 152°C; used as a fumigant and as a poison gas, a colorless pungent irritating liquid esther CH2=CHCH2NCS that is the chief constituent of mustard oil ... and is used as a flavoring agent and as a medical counterirritant
