https://doi.org/10.1351/goldbook.U06578
An alternative term for the compounds R2NC(=O)OR' (R' ≠ H), @E02219@ of carbamic acids, R2NC(=O)OH, in strict use limited to the ethyl @E02219@, but widely used in the general sense, e.g. 'polyurethane resins'.
See:
carbamates
, esters