2-乙基-2-羟基丁酸乙酯

尿素

5,5-diethyl-4-(4-methyl-anilino)-5H-oxazol-2-one

C,C-diethyl-N-p-tolyl-ketenimine

(2-ethoxy-5,5-diethyl-oxazol-4-ylidene)-p-tolyl-amine