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 747 results
Search term:
MF = 'C_{20}H_{18}F_{3}N_{3}O_{2}S'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
868605
zoom
C
20
H
18
F
3
N
3
O
2
S
421.436
30
22
0
0
868607
zoom
C
20
H
18
F
3
N
3
O
2
S
421.436
28
23
0
0
869040
zoom
C
20
H
18
F
3
N
3
O
2
S
421.436
27
20
0
0
3313838
zoom
C
20
H
18
F
3
N
3
O
2
S
421.436
25
19
0
0
563921
zoom
C
20
H
18
F
3
N
3
O
2
S
421.436
23
13
0
0
1215646
zoom
C
20
H
18
F
3
N
3
O
2
S
421.436
23
19
0
0
977709
zoom
C
20
H
18
F
3
N
3
O
2
S
421.436
22
14
0
0
2252134
- 0/1 defined
zoom
C
20
H
18
F
3
N
3
O
2
S
421.4360296
21
15
0
0
2400325
- 0/1 defined
zoom
C
20
H
18
F
3
N
3
O
2
S
421.4360296
20
13
0
0
1676032
zoom
C
20
H
18
F
3
N
3
O
2
S
421.436
20
11
0
0
2241981
- 0/1 defined
zoom
C
20
H
18
F
3
N
3
O
2
S
421.4360296
19
14
0
0
985996
zoom
C
20
H
18
F
3
N
3
O
2
S
421.436
18
11
0
0
986022
zoom
C
20
H
18
F
3
N
3
O
2
S
421.436
18
11
0
0
2400364
zoom
C
20
H
18
F
3
N
3
O
2
S
421.4360296
18
11
0
0
12239320
zoom
C
20
H
18
F
3
N
3
O
2
S
421.436
17
10
0
0
12275110
- 0/1 defined
zoom
C
20
H
18
F
3
N
3
O
2
S
421.436
16
9
0
0
1231156
zoom
C
20
H
18
F
3
N
3
O
2
S
421.436
16
11
0
0
12211544
zoom
C
20
H
18
F
3
N
3
O
2
S
421.436
15
10
0
0
12211545
zoom
C
20
H
18
F
3
N
3
O
2
S
421.436
15
10
0
0
20439772
zoom
C
20
H
18
F
3
N
3
O
2
S
421.436
14
12
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement