5-ethoxy-2-phenyl-1,3-oxazole-4-carbothioamide

乙基5-氨基-2-苯基-1,3-恶唑-4-羧酸酯

2-苯基-5-氨基噻唑-4-羧酸乙酯

2,5-diphenyl-6H-[1,3]oxazolo[5,4-d]pyrimidin-7-one

2-phenyloxazolo[5,4-d]pyrimidin-7(6H)-one