Please tick the box to continue:
The copyright law of the United States [Title 17, US Code]governs the making of photocopies or other reproductions ofcopyrighted material.
![Synthesis of Pyrano [2,3,d] Pyrimidines under green …...Heterocyclic chemistry is one of the most important and valuable branches in chemistry science. Heterocyclic Heterocyclic](https://static.cupdf.com/doc/110x72/5f2347e91b536921410fd269/synthesis-of-pyrano-23d-pyrimidines-under-green-heterocyclic-chemistry-is.jpg)
