2-Pyridinecarboxylic acid, 5-butoxy-, 1-(3-methyl-1-oxobutoxy)ethyl ester 5-Butoxypicolinic acid 1-hydroxyethyl ester ester with isovaleric acid 66970-10-3 BRN 0430825 Picolinic acid, 5-butoxy-, 1-hydroxyethyl ester, ester with isovaleric acid