.beta.-(1-Cyclohexenyl)ethylamine 1-Cyclohexen-1-ylethylamine 1-Cyclohexene-1-ethanamine 2-(1-Cyclohexen-1-yl)ethylamine 2-(1-Cyclohexenyl)ethylamine 3399-73-3 Cyclohexenylethylamine NSC26453