TY  - SER
AU  - Khan, Misbahul Ain
AU  - Caldas, Edvaldo Cavalcanti
TI  - Condensed Benzopyrans Vi.8 H-Pyrano [3,2-F] Quinoxalines
KW  - Pyrano [3,2-F] Quinoxalines
KW  - Coumarins
KW  - 1h Nmr Spectra
ER  -