Chemical Name : Pyromellitic dianhydride
CAS : 89-32-7
Synonyms: 1,2,4,5-Benzenetetracarboxylic anhydride;1,2,4,5-Benzenetetracarboxylic dianhydride;1,2,4,5-Benzenetetracarboxylic-1,2:4,5-dianhydride;Benzene-1,2,4,5-tetracarboxylic dianhydride;Labotest-bb ltbb001646;Pmda;Pyromellitic anhydride;Pyromellitic dianhydride;Timtec-bb sbb008218;Ukrorgsyn-bb bbr-007946
Tetra

![4H-pyrazolo[5,1-c][1,4]oxazine-2-carboxylic acid, 6,7-dihydro-, ethyl ester](https://thsciimg.chemcd.cn/TS18250.gif)

