42
2 Summary Tables
Mass Ion
Product ion
(and neutral
particle lost)
Substructure or compound type
44
CO 2
+· ,
C 2 H 6 N + ,
C 2 H 4 O +· ,
CS +· , C 3 H 8
+· ,
CH 4 Si +·
[M-44] +· (C 3 H 8 )
(C 2 H 6 N)
(C 2 H 4 O)
(CO 2 )
propylalkanes
N,N-dimethylamines, N-ethylamines
cycloalkanols, cyclic ethers,
ethylene ketals, aliphatic aldehydes
(McLafferty rearrangement)
anhydrides, lactones, carboxylic
acids
45
C 2 H 5 O + ,
C 2 H 7 N +· ,
CHS + (with
isotope signal
for 34 S)
[M-45] + (C 2 H 5 O)
(CHO 2 )
(C 2 H 7 N)
ethyl esters, ethyl ethers, lactones,
ethyl sulfonates, ethyl sulfones
carboxylic acids
N,N-dimethylamines, N-ethylamines
O indicator
S indicator
46
C 2 H 5 OH +· ,
NO 2
+
[M-46] +· (C 2 H 6 O)
(H 2 O + C 2 H 4 )
(H 2 O + CO)
(NO 2 )
ethyl esters, ethyl ethers, ethyl
sulfonates
primary alcohols
carboxylic acids
nitro compounds
47
CH 3 S + , CCl + ,
C 2 H 5 OH 2
+ ,
CH(OH) 2
+ ,
PO +
[M-47] + (CH 3 S) methyl sulfides (with isotope signal
for 34 S)
2 × O indicator
S indicator
P indicator
48
CH 3 SH +· ,
SO +· , CHCl +·
[M-48] +· (CH 4 S)
(SO)
methyl sulfides (with 34 S isotope
signal)
sulfoxides, sulfones, sulfonates (with
34 S isotope signal)
49
CH 2 Cl + ,
CH 3 SH 2
+
[M-49] + (CH 2 Cl) chloromethyl (with 37 Cl isotope
signal)
(with 34 S iso tope sig nal)
50
C 4 H 2
+· ,
CH 3 Cl +· ,
CF 2
+·
[M-50] +· (CF 2 ) trifluoromethylaromatics, perfluoroalicyclics
51
C 4 H 3
+ ,
CHF 2
+