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ChemSpider
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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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Average Mass:
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M+CH3CNH
M+CH3OH2
M+.
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M+Na
M+NH4
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M-H
M+acetate
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+e
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M+CH3CNH
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Found 15459 results
Search term:
MF = 'C_{18}H_{21}N_{3}O_{4}'
1
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ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
15012
zoom
C
18
H
21
N
3
O
4
343.37704
89
208
0
0
21800923
zoom
C
18
H
21
N
3
O
4
343.377
32
19
0
0
9914115
zoom
C
18
H
21
N
3
O
4
343.377
30
28
0
0
1533151
zoom
C
18
H
21
N
3
O
4
343.377
30
20
0
0
639798
zoom
C
18
H
21
N
3
O
4
343.377
27
15
0
0
4959170
zoom
C
18
H
21
N
3
O
4
343.377
27
19
0
0
23168310
- 1/1 defined
zoom
C
18
H
21
N
3
O
4
343.377
26
27
0
0
32689471
zoom
C
18
H
21
N
3
O
4
343.377
26
19
0
0
926781
zoom
C
18
H
21
N
3
O
4
343.377
26
17
0
0
707175
zoom
C
18
H
21
N
3
O
4
343.377
25
18
0
0
639993
zoom
C
18
H
21
N
3
O
4
343.377
24
19
0
0
1929055
zoom
C
18
H
21
N
3
O
4
343.377
24
17
0
0
1199822
zoom
C
18
H
21
N
3
O
4
343.377
23
20
0
0
736529
zoom
C
18
H
21
N
3
O
4
343.377
23
14
0
0
27319619
- 0/1 defined
zoom
C
18
H
21
N
3
O
4
343.377
23
20
0
0
2221697
zoom
C
18
H
21
N
3
O
4
343.37704
23
14
0
0
2497907
- 0/1 defined
zoom
C
18
H
21
N
3
O
4
343.377
22
21
0
0
4363086
zoom
C
18
H
21
N
3
O
4
343.37704
22
18
0
0
1244647
zoom
C
18
H
21
N
3
O
4
343.377
22
18
0
0
2044425
zoom
C
18
H
21
N
3
O
4
343.37704
22
24
0
0
1
2
3
4
5
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