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ChemSpider
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Simple
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
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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 6553 results
Search term:
MF = 'C_{21}H_{27}NO_{3}'
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ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
4763
- 0/1 defined
zoom
C
21
H
27
NO
3
341.444
109
1016
1341
9
160687
- 1/1 defined
zoom
C
21
H
27
NO
3
341.444
37
34
0
0
2104466
- 0/1 defined
zoom
C
21
H
27
NO
3
341.44398
35
31
0
0
780691
zoom
C
21
H
27
NO
3
341.444
34
26
0
0
160686
- 1/1 defined
zoom
C
21
H
27
NO
3
341.444
33
26
0
0
28534746
zoom
C
21
H
27
NO
3
341.444
31
15
0
0
629123
zoom
C
21
H
27
NO
3
341.444
27
17
0
0
2220137
- 0/2 defined
zoom
C
21
H
27
NO
3
341.44398
26
18
0
0
588506
zoom
C
21
H
27
NO
3
341.444
25
14
0
0
1662031
zoom
C
21
H
27
NO
3
341.444
25
16
0
0
29211818
- 0/2 defined
zoom
C
21
H
27
NO
3
341.444
24
19
0
0
633868
zoom
C
21
H
27
NO
3
341.444
24
14
0
0
655808
zoom
C
21
H
27
NO
3
341.444
24
14
0
0
2223684
- 0/2 defined
zoom
C
21
H
27
NO
3
341.44398
24
16
0
0
1274905
zoom
C
21
H
27
NO
3
341.444
24
15
0
0
1306073
zoom
C
21
H
27
NO
3
341.444
23
12
0
0
1422724
zoom
C
21
H
27
NO
3
341.444
23
14
0
0
2253546
- 0/1 defined
zoom
C
21
H
27
NO
3
341.44398
23
17
0
0
4479789
zoom
C
21
H
27
NO
3
341.444
23
13
0
0
730360
zoom
C
21
H
27
NO
3
341.444
23
12
0
0
1
2
3
4
5
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