Jump to main content
Jump to site nav
Home
About us
Membership & professional community
Campaigning & outreach
Journals, books & databases
Teaching & learning
News & events
Locations & contacts
Home
About us
Web APIs
Help
Sign in
ChemSpider
Search and share chemistry
Simple
Structure
Advanced
History
Molecular Formula:
Define range intervals using parentheses.
E.g. C7H(10-14)O(0-4)
Molecular Weight:
to
±
(example: 123 ± 1)
min/max
+/-
Nominal Mass:
to
±
-2H+
-H+
+H+
+2H+
min/max
+/-
Average Mass:
to
±
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:
to
±
M+CH3CNH
M+CH3OH2
M+.
M+K
M+Na
M+NH4
M+H
M-H
M+acetate
M-.
M+Cl
-e
+e
min/max
+/-
Search
Search Hits Limit:
100
1000
10000
Filter
Single/Multi-component
Search Any
Search Single-Component Structures Only
Search Multi-Component Structures Only
Isotopically Labeled
Search Any
Search Isotopically Labeled Structures Only
Disregard Isotopically Labeled Structures
Additional Filters
Filter only those having analytical data
Found 1869 results
Search term:
MF = 'C_{18}H_{20}F_{2}N_{2}O_{2}'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
3952996
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
22
14
0
0
2495649
- 0/1 defined
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
18
12
0
0
1851954
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
13
9
0
0
3961758
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
13
8
0
0
3978889
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
13
9
0
0
1840027
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
12
9
0
0
22526814
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
11
8
0
0
22526840
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
11
8
0
0
7553029
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
11
8
0
0
7553065
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
11
7
0
0
11076016
- 0/1 defined
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
10
8
0
0
11085393
- 0/1 defined
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
10
6
0
0
16927552
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
10
7
0
0
22125187
- 0/1 defined
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
10
9
0
0
22244684
- 0/1 defined
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
10
8
0
0
22249819
- 0/1 defined
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
10
8
0
0
22767943
- 0/1 defined
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
10
6
0
0
32513557
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
10
8
0
0
6307640
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
10
8
0
0
7553003
zoom
C
18
H
20
F
2
N
2
O
2
334.3604
10
7
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement