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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
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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 362 results
Search term:
MF = 'C_{21}H_{20}'
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ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
2343248
zoom
C
21
H
20
272.3835
36
27
0
1
2298866
zoom
C
21
H
20
272.3835
25
32
0
0
213367
zoom
C
21
H
20
272.3835
20
16
0
19
497467
zoom
C
21
H
20
272.3835
17
13
0
0
2897790
- 0/1 defined
zoom
C
21
H
20
272.3835
17
15
0
2
2031298
zoom
C
21
H
20
272.3835
16
15
0
0
281049
zoom
C
21
H
20
272.3835
13
12
0
0
213126
zoom
C
21
H
20
272.3835
13
7
0
0
95480
zoom
C
21
H
20
272.3835
12
12
0
0
1376596
zoom
C
21
H
20
272.3835
12
11
0
0
213127
zoom
C
21
H
20
272.3835
11
7
0
0
14417677
zoom
C
21
H
20
272.3835
11
13
0
0
126530
- 0/1 defined
zoom
C
21
H
20
272.3835
10
10
0
0
3334981
zoom
C
21
H
20
272.3835
10
12
0
0
203032
zoom
C
21
H
20
272.3835
9
6
0
0
4190516
- 0/1 defined
zoom
C
21
H
20
272.3835
8
4
0
0
14044754
zoom
C
21
H
20
272.3835
8
9
0
0
14980475
zoom
C
21
H
20
272.3835
8
9
0
0
265336
- 0/4 defined
zoom
C
21
H
20
272.3835
7
5
0
0
165218
zoom
C
21
H
20
272.3835
6
6
0
0
1
2
3
4
5
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