乌洛托品杂质2 货号:U300002 英文名:Methenamine Impurity 2 同义词:bis(7-methyl-1,3,5,7-tetraazabicyclo[3.3.1]nonan-3-yl)methane CAS号:185309-32-4 分子式:C13H28N8 分子量:296.42 询价订购