structural formula business number 01fv molecular formula c5h4n4o2 molecular weight 152.11 label 3,7-dihydro-1h-purine-2,6-dione, yellow urine ring, xanthine, 2,6-purine dioxide, haishengtin, yellow flower color essence, 2,6-dihydroxypurine, 2,6-dioxopurine, 2,6-dioxo-1,2,3,6-tetrahydropurine numbering system physical property data toxicological data ecological data molecular structure data computing chemical data more properties and stability storage method synthesis method purpose numbering system cas number:69-89-6...