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 1239 results
Search term:
MF = 'C_{20}H_{18}O_{4}'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
4478223
zoom
C
20
H
18
O
4
322.3545
64
59
0
0
546690
zoom
C
20
H
18
O
4
322.3545
57
45
0
0
82683
- 2/2 defined
zoom
C
20
H
18
O
4
322.3545
47
74
0
0
137515
zoom
C
20
H
18
O
4
322.3545
46
63
0
0
10161
- 0/2 defined
zoom
C
20
H
18
O
4
322.3545
46
108
53
40
620708
zoom
C
20
H
18
O
4
322.3545
45
31
0
0
4735333
zoom
C
20
H
18
O
4
322.3545
44
50
0
0
23550835
zoom
C
20
H
18
O
4
322.3545
39
34
0
0
546691
zoom
C
20
H
18
O
4
322.3545
36
31
0
0
421858
zoom
C
20
H
18
O
4
322.3545
35
44
0
0
5380398
zoom
C
20
H
18
O
4
322.3545
34
28
0
0
21358358
- 0/1 defined
zoom
C
20
H
18
O
4
322.3545
31
24
0
0
648507
zoom
C
20
H
18
O
4
322.3545
31
17
0
0
391401
zoom
C
20
H
18
O
4
322.3545
29
25
0
0
611491
zoom
C
20
H
18
O
4
322.3545
29
18
0
0
2162898
- 0/1 defined
zoom
C
20
H
18
O
4
322.35452
28
17
0
0
611447
zoom
C
20
H
18
O
4
322.3545
27
17
0
0
675969
zoom
C
20
H
18
O
4
322.3545
27
14
0
0
1285313
zoom
C
20
H
18
O
4
322.3545
27
14
0
0
1697155
zoom
C
20
H
18
O
4
322.3545
27
15
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement