Table 1.
Group | No. | Chemical name | Abundance of characteristic ions in MS/MS (%) | |||
---|---|---|---|---|---|---|
m/z [M-80]- | m/z 80 | m/z 96 | m/z 97 | |||
a | 1 | 4-nitrocatechol sulfate | 100a | – | – | – |
2 | L-ascorbic acid 2-sulfate | 31a | – | – | – | |
3 | Indoxyl sulfate | 24a | 52 | – | – | |
4 | 4-nitrophenyl sulfate | 100a | – | – | – | |
5 | β-estradiol 3-sulfate | 100a | – | – | – | |
6 | 5-Br-4-Cl-3-indolyl sulfate | 47a | 59 | – | – | |
7 | 4-methylumbelliferyl sulfate | 100a | – | – | – | |
b | 8 | 2-aminoethyl hydrogen sulfate | – | 100 | 18 | 67a |
9 | Poly (vinyl sulfate) | – | – | – | 97a | |
10 | D-glucose 6-sulfate | – | – | – | 100a | |
11 | Chondroitin disaccharide Δdi-6S | – | – | – | 31a | |
12 | N-acetylglucosamine 6-sulfate | – | – | – | 93a | |
c | 13 | 2-naphthalenemethanol, α-methyl- sulfate | – | 6.7 | 7.3a | 100 |
14 | Benzyl sulfate | – | 16 | 100a | – | |
15 | (R)-1-phenyl-2-propen-1-sulfate | – | 26 | 100a | 12 | |
16 | 4-Cl-2-methylbenzyl sulfate | – | – | 100a | 95 | |
17 | 3-ethoxybenzyl sulfate | – | 100 | 13a | 6.4 | |
18 | 2-ethoxybenzyl sulfate | – | 100 | 17a | 8.5 | |
19 | 4-ethoxybenzyl sulfate | – | 100 | 20a | 8.7 | |
20 | crotyl sulfate | – | 55 | 91a | 50 | |
21 | furfuryl sulfate | – | – | 53a | 39 | |
d | 22 | N-methyl-hydroxylamine-O-sulfonic acid | – | 100 | 73a | 9.2 |
23 | N-isopropyl- hydroxylamine-O-sulfonic acid | – | 68 | 100a | 5.1 | |
24 | N-cyclohexyl-hydroxylamine-O-Sulfonic acid | – | 27 | 100a | 11 | |
25 | N,N-diethyl-hydroxylamine-O-sulfonic acid | – | 92 | 100a | 19 | |
26 | N-benzoyl-N-phenyl-hydroxylamine-O-sulfonic acid | – | – | 100a | – | |
e | 27 | N-cyclohexylsulfamic acid | – | 100a | – | – |
28 | 4-methylphenyl-Sulfamic acid | – | 100a | – | – | |
29 | 3-hydroxypropyl-sulfamic acid | – | 100a | – | – | |
30 | D-glucosamine 2-sulfate | – | 100a | – | – | |
31 | butyl-sulfamic acid | – | 100a | – | – | |
32 | (R)(+)-α-phenethylsulfamic acid | – | 100a | – | – |
*A threshold of 5.0% is used for the relative abundance of characteristic ions. The long dash (–) means that the characteristic ion can not be detected or the relative abundance is below 5.0%
aRepresents the specific characteristic ion of each group that can help to identify the sulfation site