4-Methylfuro[2,3-d]pyridazine

    Parameter     ppm  Hz

      D(A)         9.36
      D(B)         7.84
      D(C)         6.89
       J(A,B)          0.0
       J(A,C)          1.05
       J(B,C)          2.2
     
      D(D)         2.91
     
     ROBBA,M. & ZALUSKI,M.-C. BULL.SOC.CHIM.FR. 1968, 4959