34834-63-4 6-Propyltetrazolo(1,5-c)pyrimidine-5,7(6H,8H)-dione Tetrazolo(1,5-c)pyrimidine-5,7(6H,8H)-dione, 6-propyl- Tetrazolo(5,4-a)-6-propyluracil Vmi 510 Vmi-510