cas no:2421-28-5
Chemical name: 3,3',4,4'-Benzophenonetetracarboxylic dianhydride Cas no: 2421-28-5 Purity: 98%
Chemical name: 3,3',4,4'-Benzophenonetetracarboxylic dianhydrideCas no: 2421-28-5Purity: 98%Formula: C17H6O7Appearance: 浅黄色至类白色粉末
