Ethyl 3-ethyl-1H-pyrazole-5-carboxylate

4-氧代-4,5,6,7-四氢吡唑并[1,5-a]吡嗪-2-羧酸乙酯, Ethyl 4-oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-2-carboxylate

2-(2-溴乙基)环氧乙烷, 2-(2-Bromoethyl)oxirane

4-Nitrobenzophenone

4-硝基二苯甲酮

Prop-2-yn-1-yl butylcarbamate

2-炔丙基-N-丁基氨基甲酸酯

2-氨基-6-乙基苯甲酸, 2-Amino-6-ethylbenzoic acid

2-Cyclopentylacetaldehyde

环戊基乙醛

2,2-Dimethylpentan-3-one

2,2-二甲基-3-戊酮

2-(2-氯乙氧基)乙酰胺, 2-(2-Chloroethoxy)acetamide

3-Chlorotetrahydrofuran

3-氯四氢呋喃

3-氯-4-氧代-1-戊醇; 3-氯-5-羟基-2-戊酮, 3-Chloro-5-hydroxypentan-2-one