urethanes (urethans)

An alternative term for the compounds R2NC(=O)OR' (R'H), esters of carbamic acids, R2NC(=O)OH, in strict use limited to the ethyl esters, but widely used in the general sense, e.g. 'polyurethane resins'.
See: carbamates, esters
PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1373 (https://doi.org/10.1351/pac199567081307)