Mandelonitrile, with the formula CHCH(OH)CN, occurs in small amounts in the pits of some fruits. Related cyanogenic glycosides are known, such as amygdalin.
Glycolonitrile, also called hydroxyacetonitrile or formaldehyde cyanohydrin, is the organic compound with the formula HOCHCN. It is the simplest cyanohydrin, being derived from formaldehyde.