20763-91-1 
 
O-(3,4-dihydro-4-oxo-1,2,3-benzotriazin-3-yl)-N,N,N′,N′-tetramethyluroniumtetrafluoroborate 
 
72648-80-7 
 
EthylN-(2-BOC-aminoethyl)-N-(uracil-5-ylacetyl)glycinate 
[1]Patent:US6441130,2002,B1
[2]Patent:US6451968,2002,B1