p-Menthane-3,8-diol, also known as para-menthane-3,8-diol, PMD, or menthoglycol. It is an organic compound classified as a diol and a terpinoid.
p-Menthane-3,8-diol is extracted from the essential oil of Eucalyptus citriodora or obtained by emi-synthesis from natural citronellal (from Eucalyptus citriodora oil).
It is used mainly as an insect repellent.