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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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+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
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M+.
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M+Na
M+NH4
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M+acetate
M-.
M+Cl
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Found 107 results
Search term:
MF = 'C_{21}H_{21}N_{2}O_{3}'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
66109
- 3/3 defined
zoom
C
21
H
21
N
2
O
3
349.4025
10
11
0
0
149308
- 3/3 defined
zoom
C
21
H
21
N
2
O
3
349.4025
9
11
0
0
2572053
- 0/3 defined
zoom
C
21
H
21
N
2
O
3
349.4025
6
5
0
0
2799977
zoom
C
21
H
21
N
2
O
3
349.40304
4
2
0
0
3315437
zoom
C
21
H
21
N
2
O
3
349.4025
4
2
0
0
3553010
zoom
C
21
H
21
N
2
O
3
349.40304
4
2
0
0
2558871
zoom
C
21
H
21
N
2
O
3
349.4025
4
2
0
0
1793212
- 1/1 defined
zoom
C
21
H
21
N
2
O
3
349.4025
2
2
0
0
2278583
zoom
C
21
H
21
N
2
O
3
349.40304
2
2
0
0
4706422
zoom
C
21
H
21
N
2
O
3
349.4025
2
1
0
0
7066763
- 1/1 defined
zoom
C
21
H
21
N
2
O
3
349.4025
2
1
0
0
7066764
- 1/1 defined
zoom
C
21
H
21
N
2
O
3
349.4025
2
1
0
0
7121302
zoom
C
21
H
21
N
2
O
3
349.4025
2
1
0
0
7167982
zoom
C
21
H
21
N
2
O
3
349.4025
2
1
0
0
7168266
zoom
C
21
H
21
N
2
O
3
349.4025
2
1
0
0
7168344
zoom
C
21
H
21
N
2
O
3
349.4025
2
1
0
0
7168439
zoom
C
21
H
21
N
2
O
3
349.4025
2
1
0
0
7621304
zoom
C
21
H
21
N
2
O
3
349.4025
1
1
0
0
7682660
- 1/1 defined
zoom
C
21
H
21
N
2
O
3
349.4025
1
1
0
0
7682664
- 1/1 defined
zoom
C
21
H
21
N
2
O
3
349.4025
1
1
0
0
1
2
3
4
5
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