eugenol herbal essential oil molecule. present in cloves, nutmeg, etc. skeletal chemical formula.

eugenol molecule formula skeletal chemical acid allergen allergic allergy allylguaiacol anaesthetic antiseptic atomic atoms balsam basil c10h12o2 carbon caryophyllic chemistry cinnamon clove composition compound contact dentist dentistry dermatologist dermatology essential eugenic eugenole flat fragrance hydrogen line molecular nutmeg oil oxygen patch perfume peru phenylpropanoid phenylpropene sensitizer skin structure test