4-甲基-3a,4,7,7a-四氢-2-苯并呋喃-1,3-二酮

N,N-dibutyl-4-ethenylaniline

3-[4-(dibutylamino)phenyl]-4-hydroxycyclobut-3-ene-1,2-dione

4-[4-(二丁基氨基)苯基]偶氮苯磺酸

(3-methyl)tetrahydrophthalic anhydride