6-甲氧基-7-羟基香豆素的甲氧基的质子信号是()。A.δ7.60(1H,d,J=9.5Hz)B.δ6.85(1H,bfs)C.δ6.26(1H,d,J=9.5Hz)D.δ3.95(3H,s)E.δ6.91(1H,s)
6-甲氧基-7-羟基香豆素的甲氧基的质子信号是()。
A.δ7.60(1H,d,J=9.5Hz)
B.δ6.85(1H,bfs)
C.δ6.26(1H,d,J=9.5Hz)
D.δ3.95(3H,s)
E.δ6.91(1H,s)
相关考题:
6-甲氧基-7-羟基香豆素的H-4信号是()A. 7.60(1H,d,J=9.5Hz)B. 6.85(1H,brs)C. 6.26(1H,d,J= 9.5Hz)D. 3.95(3H,s)E. 6.91(1H,s)
根据下列选项,回答 107~109 题:A.δ7.60(1H,d,J=9.5Hz)B.δ6.5(1H,brs)C.δ6.26(1H,d,J=9.5Hz)D. δ3.95(3H,s)E.86.91(1H,s)第 107 题 6-甲氧基-7-羟基香豆素的H-3信号是( )。
6一甲氧基一7一羟基香豆素的H一3倍号是A.Δ7.60(1H,J=9.5HZ)B.Δ6.85(1H,D,J=9.5HZ)C.Δ6.26(1H,J=9.5HZ)D.Δ3.95(1H,D,J=-9.5HZ)E.Δ6.91(1LL,D,J=9.5HZ)
6一甲氧基-7-羟基香豆素的H一4信号是A.Δ7.60(1H,J=9.5HZ)B.Δ6.85(1H,D,J=9.5HZ)C.Δ6.26(1H,J=9.5HZ)D.Δ3.95(1H,D,J=-9.5HZ)E.Δ6.91(1LL,D,J=9.5HZ)
6一甲氧基一7一羟基香豆素的甲氧基的质子信号是A.Δ7.60(1H,J=9.5HZ)B.Δ6.85(1H,D,J=9.5HZ)C.Δ6.26(1H,J=9.5HZ)D.Δ3.95(1H,D,J=-9.5HZ)E.Δ6.91(1LL,D,J=9.5HZ)
6-甲氧基-7-羟基香豆素的H-4信号是A. 7. 60 (1H, J= 9. 5Hz)B. 6. 85 (1H, d, J= 9. 5Hz)C.6.26 (1H, J = 9. 5Hz)D. 3. 95 (1H, d, J=9. 5Hz)E. 6. 91 (1H, d, J =9. 5Hz)
6-甲氧基_7 -羟基香豆素的甲氧基的 质子信号是A. 7. 60 (1H, J= 9. 5Hz)B. 6. 85 (1H, d, J= 9. 5Hz)C.6.26 (1H, J = 9. 5Hz)D. 3. 95 (1H, d, J=9. 5Hz)E. 6. 91 (1H, d, J =9. 5Hz)
6-甲氧基-7 -羟基香豆素的H - 3信 号是A. 7. 60 (1H, J= 9. 5Hz)B. 6. 85 (1H, d, J= 9. 5Hz)C.6.26 (1H, J = 9. 5Hz)D. 3. 95 (1H, d, J=9. 5Hz)E. 6. 91 (1H, d, J =9. 5Hz)