5,5-diethyl-1,3-dimethyl-2-oxo-2-phenoxy-1,3,2λ⁵-diazaphosphinane-4,6-dione

(2,2-二乙基-1,3-二氧代丙烷-1,3-二基)二氨基甲酸二乙酯

5,5-diethyl-2,4,6-trioxo-tetrahydro-pyrimidine-1-carboxylic acid ethyl ester