Hydroxyphenylacetylglycine (medium E) 
No. mz RI(%) DI 
1 75.000 11.893 1926.153 
2 76.000 9.593 1553.717 
3 77.000 3.077 498.356 
4 78.000 2.702 437.629 
5 106.000 100.000 16195.948 
6 107.000 49.964 8092.134

