Butyric acid, 2-chloro-2-ethyl-, trichloroethyl ester

Butyric acid, 2-chloro-2-methyl-

Butyric acid, 2-chloro-3-hydroxy-3-phosphono-, trimethyl ester

Butyric acid, 2-cyano-3, 3-diphenyl-, ethyl ester

Butyric acid, 2-ethyl-, 1, 1, 1-trichloroisopropyl ester

Butyric acid, 2-ethyl-, 2, 2, 2-tribromoethyl ester

Butyric acid, 2-ethyl-, 2, 2, 2-trichloroethyl ester

Butyric acid, 2-ethyl-2-(alpha-hydroxybenzyl)-, ethyl ester

Butyric acid, 2-ethyl-2-hydroxy-, 2-(o-chlorophenyl)hydrazide

Butyric acid, 2-ethyl-2-hydroxy-, 2-(p-bromophenyl)hydrazide

Butyric acid, 2-ethyl-4-hydroxy-, (5-nitrofurfurylidene)hydrazide

Butyric acid, 2-fluoro-, isopropyl ester

Butyric acid, 2-fluoro-, sodium salt

Butyric acid, 2-fluoro-3-hydroxy-, sodium salt

Butyric acid, 2-fluoro-3-methyl-

Butyric acid, 2-hydrazino-3-methyl-, DL-

Butyric acid, 2-hydrazino-3-methyl-, ethyl ester, hydrochloride, DL-

Butyric acid, 2-methyl-2-phenyl-

Butyric acid, 2-methyl-4-phenyl-

Butyric acid, 2-oxo-, ethyl ester, oxime