105356-57-8
4-噻吩-2-基-2,4-二氧丁酸
+
95-55-6
美沙拉嗪杂质C
→
~80%
339026-80-1
3-(2-oxo-2-thiophen-2-ylethylidene)-4H-1,4-benzoxazin-2-one