133-34-6 2,5-Dimethylpiperazine (R-(R*,R*))-tartrate (1:1) EINECS 205-102-0 Piperazine, 2,5-dimethyl-, (2R,3R)-2,3-dihydroxybutanedioate (1:1) Piperazine, 2,5-dimethyl-, (theta-(theta,theta))-2,3-dihydroxybutanedioate (1:1)