氢溴酸

2,3-二氯马来酸酐

二丙-2-炔基丁-2-炔二酸酯

1,4,5,8-Tetrahydro-4a,8a-naphthalindicarbonsaeureanhydrid

7-benzyl-7-azabicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylic acid