105020-48-2
3H-吡唑-3,3,4,4(5H)-四羧酸, 四甲基酯
→
~98%
105020-49-3
tetramethyl 1H-pyrazole-4,4,5,5-tetracarboxylate
1733-15-9
tetramethyl ethene-1,1,2,2-tetracarboxylate