Synonyms: 1,1'-buta-1,3-diyne-1,4-diylbis[4-(ethynyloxy)-2,2,5-trimethylpiperidine] dihydrochloride;AC1L54PY;AC1Q3A1Y;KST-1B4274;AR-1B4458;Piperidine, 1,1'-(1,3-butadiyne-1,4-diyl)bis(4-(ethynyloxy )-2,2,5-trimetyl-, dihydrochloride;4-ethynoxy-1-[4-(4-ethynoxy-2,2,5-trimethylpiperidin-1-yl)buta-1,3-diynyl]-2,2,5-trimethylpiperidine dihydrochloride