44
2 Summary Tables
Mass Ion
Product ion
(and neutral
particle lost)
Substructure or compound type
65
C 5 H 5
+ ,
H 2 PO 2
+
[M-65] +
(S 2 H)
(SO 2 H)
disulfides
66
C 5 H 6
+·
[M-66] +· (C 5 H 6 ) cyclopentenes
S 2 H 2
+·
disulfides (with 34 S isotope signal)
67
C 5 H 7
+ ,
C 4 H 3 O +
[M-67] + (C 4 H 3 O) furyl ketones
68
C 5 H 8
+· ,
C 4 H 4 O +· ,
C 3 H 6 CN +
[M-68] +· (C 5 H 8 )
(C 4 H 4 O)
cyclohexenes, tetralins
cyclohexenones, β‑tetralones
69
C 5 H 9
+ ,
C 4 H 5 O + ,
C 3 HO 2
+
CF 3
+
[M-69] +
(C 5 H 9 )
(CF 3 )
alicyclics, alkenes
trifluoromethyl
70
C 5 H 10
+·
alkanes, alkenes, alicyclics
C 4 H 6 O +·
cycloalkanones
C 4 H 8 N +
pyrrolidines
71
C 5 H 11
+
alkanes, larger alkyl groups
C 4 H 7 O +
alkanones, alkanals, tetrahydrofurans
72
C 4 H 8 O +·
alkanones, alkanals
O indicator
C 4 H 10 N +
aliphatic amines
N indicator
C 6
+·
perhalogenated benzenes
73
C 4 H 9 O +
alcohols, ethers, esters O indicator
C 3 H 5 O 2
+
carboxylic acids, esters, lactones
C 3 H 9 Si +
trimethylsilyl compounds
74
C 4 H 10 O +·
ethers
C 3 H 6 O 2
+·
methyl esters of carboxylic acids,
α‑methyl carboxylic acids
75
C 3 H 7 O 2
+
methyl acetals, glycols
2 × O indicator
C 3 H 7 S +
sulfides, thiols (with 34 S isotope
signal)
S indicator
C 2 H 7 SiO +
trimethylsilyloxyl compounds
76
C 6 H 4
+·
aromatics
77
C 6 H 5
+
aromatics
C 3 H 6 Cl +
chloro compounds (with 37 Cl isotope
signal)