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ChemSpider
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Structure
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Molecular Formula:
Define range intervals using parentheses.
E.g. C7H(10-14)O(0-4)
Molecular Weight:
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(example: 123 ± 1)
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Nominal Mass:
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-2H+
-H+
+H+
+2H+
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Average Mass:
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±
M+CH3CNH
M+CH3OH2
M+.
M+K
M+Na
M+NH4
M+H
M-H
M+acetate
M-.
M+Cl
-e
+e
min/max
+/-
Monoisotopic Mass:
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M+CH3CNH
M+CH3OH2
M+.
M+K
M+Na
M+NH4
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M-H
M+acetate
M-.
M+Cl
-e
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Found 101 results
Search term:
MF = 'C_{21}H_{28}NO_{3}'
1
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5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
3991
zoom
C
21
H
28
NO
3
342.4514
13
13
0
0
373685
zoom
C
21
H
28
NO
3
342.4514
4
3
0
0
3286139
- 0/1 defined
zoom
C
21
H
28
NO
3
342.4514
3
1
0
0
3371788
zoom
C
21
H
28
NO
3
342.45192
2
2
0
0
5326559
- 2/2 defined
zoom
C
21
H
28
NO
3
342.45192
2
2
0
0
8771157
zoom
C
21
H
28
NO
3
342.4514
2
2
0
0
9606196
- 0/1 defined
zoom
C
21
H
28
NO
3
342.4514
2
2
0
0
1265993
- 1/1 defined
zoom
C
21
H
28
NO
3
342.4514
2
1
0
0
1298568
- 1/1 defined
zoom
C
21
H
28
NO
3
342.4514
2
2
0
0
1298570
- 1/1 defined
zoom
C
21
H
28
NO
3
342.4514
2
2
0
0
1307842
zoom
C
21
H
28
NO
3
342.4514
2
2
0
0
1601262
- 1/1 defined
zoom
C
21
H
28
NO
3
342.4514
2
1
0
0
1601263
- 1/1 defined
zoom
C
21
H
28
NO
3
342.4514
2
1
0
0
38851
zoom
C
21
H
28
NO
3
342.4514
2
2
0
0
42559
zoom
C
21
H
28
NO
3
342.4514
2
2
0
0
42563
zoom
C
21
H
28
NO
3
342.4514
2
2
0
0
10053274
- 4/4 defined
zoom
C
21
H
28
NO
3
342.4514
1
1
0
0
10053276
- 4/4 defined
zoom
C
21
H
28
NO
3
342.4514
1
1
0
0
10053278
- 4/4 defined
zoom
C
21
H
28
NO
3
342.4514
1
1
0
0
21219326
- 0/1 defined
zoom
C
21
H
28
NO
3
342.4514
1
1
0
0
1
2
3
4
5
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