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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: J Am Soc Mass Spectrom. 2014 Apr 30;25(8):1404–1411. doi: 10.1007/s13361-014-0901-4

Figure 4.

Figure 4

High-energy CID fragmentation in the negative-ion mode of 21-sulfates: a. iSS427, b. SS427 c, SS425 d, SS441, and e. SS439. The highly broadened [M–H]− signals indicate this precursor is off scale presumably because the product-ion yield is low and dispersed over many fragments.