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 32695 results
Search term:
MF = 'C_{18}H_{20}N_{2}O'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
2076831
zoom
C
18
H
20
N
2
O
280.3642
75
110
0
0
18683284
- 1/1 defined
zoom
C
18
H
20
N
2
O
280.3642
68
103
0
0
2017194
zoom
C
18
H
20
N
2
O
280.3642
65
89
0
0
66449
zoom
C
18
H
20
N
2
O
280.3642
63
82
0
0
228924
zoom
C
18
H
20
N
2
O
280.3642
56
65
0
0
696733
zoom
C
18
H
20
N
2
O
280.3642
55
74
0
0
1511011
zoom
C
18
H
20
N
2
O
280.3642
50
58
0
0
228925
zoom
C
18
H
20
N
2
O
280.3642
47
58
0
0
28295312
zoom
C
18
H
20
N
2
O
280.3642
46
54
0
0
26686
zoom
C
18
H
20
N
2
O
280.3642
44
52
0
0
103836
zoom
C
18
H
20
N
2
O
280.3642
43
50
0
0
10784240
- 0/1 defined
zoom
C
18
H
20
N
2
O
280.3642
41
53
0
0
2162318
- 0/1 defined
zoom
C
18
H
20
N
2
O
280.3642
39
47
0
0
21805033
zoom
C
18
H
20
N
2
O
280.3642
37
47
0
0
47504
zoom
C
18
H
20
N
2
O
280.3642
36
45
0
0
786447
zoom
C
18
H
20
N
2
O
280.3642
35
43
0
0
1511014
zoom
C
18
H
20
N
2
O
280.3642
34
40
0
0
8835763
- 2/2 defined
zoom
C
18
H
20
N
2
O
280.3642
34
38
0
0
655980
zoom
C
18
H
20
N
2
O
280.3642
32
36
0
0
660802
zoom
C
18
H
20
N
2
O
280.3642
32
46
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement