TABLE 1.

b- And y-Type Ions Assigned for the +2 and +3 Full Scan Angiotensin I MS/MS Spectra from On-Line Analysis

Ion Assignment	Theoretical m/z	Experimental m/z	Mass Difference (ppm)	Relative Intensity (%)
+2 Charge State
b4+	534.2671	534.2670	0.19	4.39
b9+2	583.2987	583.2988	−0.17	38.78
b5+	647.3511	647.3522	−1.70	2.02
b6+	784.4100	784.4067	0.38	100
b7+	881.4628	881.4639	−1.25	2.56
b8+	1028.5312	1028.5331	−1.85	32.54
y2+	269.1608	269.1609	−0.37	8.85
y4+	513.2820	513.2823	−0.58	43.34
y6+	763.4244	763.4250	−0.79	2.03
y7+	926.4883	926.4891	−0.86	1.24
y8+	1025.5567	1025.5605	−3.71	2.23
+3 Charge State
b6+2	392.7087	392.7085	1.37	32.74
b4+	534.2671	534.2667	0.75	12.06
b9+2	583.2987	583.2979	1.37	91.87
b5+	647.3511	647.3501	1.54	88.65
b6+	784.4100	784.4091	1.15	26.56
b8+	1028.5312	1028.5278	3.31	2.59
y2+	269.1608	269.1609	−0.37	5.88
y5+2	325.6741	325.6735	1.84	4.05
y3+	416.2292	416.2289	0.72	3.31
y8+	513.2820	513.2816	0.78	100

The relative intensity reported is for each separate MS/MS spectrum.