4-Iodo-2-nitroaniline

4-碘-2-硝基苯胺

4-Methoxybenzoylacetonitrile

4-甲氧基苄氧基乙腈

4′-Fluoro-2′-hydroxyacetophenone

4'-氟-2'-羟基苯乙酮

4-Nitrocinnamaldehyde, predominantly trans

4-硝基肉桂醛，主要为反式

4-Thiazolecarboxylic acid

噻唑-4-甲酸

4,4′-Methylenebis(2-methylcyclohexylamine), mixture of isomers

4,4′-亚甲基双(2-甲基环己胺)，异构体混合物

4,5-Dimethoxy-2-nitrobenzyl chloroformate

4,5-二甲氧基-2-硝基苄基氯甲酸酯

5-(4-Fluorophenyl)thiophene-2-carboxylic acid hydrazide

5-(4-氟苯基)噻吩-2-羧酸酰肼

4-Bromobenzyl isocyanate

4-溴苄基异氰酸酯

4-Cyanophenylacetic acid

4-氰基苯乙酸