3-butoxy-4-(2-methoxyethoxy)cyclobut-3-ene-1,2-dione

3,4-bis(2-methoxyethoxy)cyclobut-3-ene-1,2-dione

1-[butyl(2-methoxyethoxymethyl)phosphoryl]butane

bis(2-methoxyethyl) propanedioate

2-(2-甲氧基乙氧基)乙醛二乙基乙缩醛