2,5,5-Trimethyl-2-(2-(4-methyl-1-piperazinyl)-2-oxoethyl)-4-thiazolidinecarboxylic acid 4-Carboxy-2,5,5-trimethylthiazolidine-2-aceto-N-methylpiperazide 4-Thiazolidinecarboxylic acid, 2,5,5-trimethyl-2-(2-(4-methyl-1-piperazinyl)-2-oxoethyl)- 85486-56-2