Synthetics
Valeric acid has a pungent, acidic, and sharp aroma reminiscent of cheese, sour milk, tobacco, with subtle fruity nuances.
Mosciano, Gerard P&F 15, No. 6, 35, (1990): Pungent acidic and dairy-like
Luebke, William tgsc, (1989): Pungent acidic cheesy vinegar
Blue Marble Biomaterials: Pungent, acidic, cheesy, vinegar
Prodasynth: Rancid milk-butter,cheese,pungent
FCI SAS: Pungent acidic cheesy vinegar