2-乙基-3-(2-乙氧基-2-氧代乙基)-5-甲基-1H-吡咯-2,4-二羧酸-4-苄酯

5-methyl-4-nitroso-2-phenylpyrazol-3-amine

(2Z)-2-hydroxyimino-1-phenyl-2-pyridin-1-ium-1-ylethanone,bromide

3,4-dimethyl-5-thiophen-2-yl-1,2-oxazole

3-methylbutan-1-ol,sulfuric acid