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 1494 results
Search term:
MF = 'C_{20}H_{18}O'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
1266978
zoom
C
20
H
18
O
274.3563
68
72
0
0
120160
zoom
C
20
H
18
O
274.3563
67
67
0
0
85852
zoom
C
20
H
18
O
274.3563
64
47
0
0
2043375
zoom
C
20
H
18
O
274.3563
55
55
16
5
227889
zoom
C
20
H
18
O
274.3563
48
33
1
9
214300
zoom
C
20
H
18
O
274.3563
44
33
4
22
1266976
zoom
C
20
H
18
O
274.3563
39
29
3
2
224838
zoom
C
20
H
18
O
274.3563
38
30
0
0
5986267
zoom
C
20
H
18
O
274.3563
31
22
0
0
12929791
zoom
C
20
H
18
O
274.3563
24
19
0
0
214348
zoom
C
20
H
18
O
274.3563
23
14
0
0
86033
zoom
C
20
H
18
O
274.3563
22
12
3
8
1041980
zoom
C
20
H
18
O
274.3563
22
17
0
0
213263
zoom
C
20
H
18
O
274.3563
18
14
0
19
9325136
zoom
C
20
H
18
O
274.3563
17
13
0
0
539838
zoom
C
20
H
18
O
274.3563
16
12
0
6
10016082
- 0/1 defined
zoom
C
20
H
18
O
274.3563
15
12
0
0
4368921
- 0/1 defined
zoom
C
20
H
18
O
274.35632
15
9
0
0
19289
- 0/1 defined
zoom
C
20
H
18
O
274.3563
15
20
1
19
196714
zoom
C
20
H
18
O
274.3563
15
11
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement