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Mass Data


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common neutral losses

 

Common neutral loss fragments detected by mass spectrometry are shown.

mass unit

likely composition

  1

H

  15

CH3

  17

OH

  18

H2O

  19

F

  20

HF

  27

C2H3, HCN

  28

C2H4, CO

  30

CH2O

  31

CH3O

  32

CH4O, S

  33

CH3 + H2O, HS

  33

H2S

  35(37)

Cl

  36(38)

HCl

  42

C3H6, C2H2O, C2H4N

  43

C3H7, CH3CO

  44

CO2O, CONH2

  45

C2H5O

  55

C4H7

  57

C4H9

  59

C2H3O2

  60

C2H4O2

  64

SO2

  79(81)

Br

  80(82)

HBr

  127

I

  128

HI

 

 

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