3,7-diphenyl-tetrahydro-pyrazolo[1,2-a]pyrazole-1,2,5,6-tetracarboxylic acid-1,2,5,6-dianhydride

4,7-二甲基-2-苯并呋喃-1,3-二酮

2-[2-(4-ethylphenyl)propan-2-yl]butanedioic acid

N-(羧甲基)马来酰胺酸

N-苄基天冬氨酸