2-甲基-3H-苯并[4,5]呋喃并[3,2-d]嘧啶-4-酮

2-(氯甲基)[1]苯并呋喃并[3,2-d]嘧啶-4(3h-)-酮

2-Methoxymethyl-3H-benzo[4,5]furo[3,2-d]pyrimidin-4-one

2,3-dimethyl-3,4-dihydro-4-oxobenzofuro<3,2-d>pyrimidine

2-mercaptomethyl-3,4-dihydro-4-oxobenzofuro<3,2-d>pyrimidine