spectrum
Figure 1: Product-ion spectrum of the [M+H]+ ion of A) Adenosine, B) Guanosine C) Thymidine D) Cytidine and E) Uridine. Product-ion spectrum of the [M+H]+ ion of F) [15N]2 Adenosine, G) [15N]2 Guanosine H) [15N] Thymidine I) [15N]2 Cytidine and J) [15N] Uridine.