2,2,4,4-Tetramethylvaleric acid 2-diethylaminoethyl ester hydrochloride 2-Diethylaminoethyl 2,2,4,4-tetramethylvalerate hydrochloride 33421-70-4 Pentanoic acid, 2,2,4,4-tetramethyl-, 2-diethylaminoethyl ester, hydrochloride Valeric acid, 2,2,4,4-tetramethyl-, 2-diethylaminoethyl ester, hydrochloride