129224-99-3 131407-81-3 (TETRAHYDROBROMIDE) 2,5-Bis[2-[[2-(4-methylpiperazin-1-yl)ethyl]thio]-4-pyrimidinyl]thiophene 2,5-[2SEt(MePiperazin)-4Pyr]Thiopene AIDS-001957 AIDS001957 Pyrimidine, 4,4'-(2,5-thiophenediyl)bis[2-[[2-(4-methyl-1-piperazinyl)ethyl]thio]-