1-ethyl-3-(2-hydroxyethyl)thiourea

(ethylcarbamothioylamino)urea

2-[[4-[[2-amino-5-(ethylcarbamothioyl)-4-oxo-1,6,7,8-tetrahydropteridin-6-yl]methylamino]benzoyl]amino]pentanedioic acid

N-乙基-2-(2-吡啶基)肼基硫代甲酰胺

2,2'-(2-甲氧基-10H-吩噻嗪-10-基羰基亚氨基)二乙基二(乙基氨基甲酸)酯