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 2383 results
Search term:
MF = 'C_{20}H_{16}N_{2}O_{3}'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
8059710
zoom
C
20
H
16
N
2
O
3
332.3526
46
26
0
0
46251
zoom
C
20
H
16
N
2
O
3
332.3526
39
26
0
0
630166
zoom
C
20
H
16
N
2
O
3
332.3526
34
19
0
0
2223771
- 0/1 defined
zoom
C
20
H
16
N
2
O
3
332.35264
33
25
0
0
724455
zoom
C
20
H
16
N
2
O
3
332.3526
32
21
0
0
619829
zoom
C
20
H
16
N
2
O
3
332.3526
32
22
0
0
588817
zoom
C
20
H
16
N
2
O
3
332.3526
32
24
0
0
2630465
- 0/1 defined
zoom
C
20
H
16
N
2
O
3
332.3526
32
18
0
0
305832
zoom
C
20
H
16
N
2
O
3
332.3526
31
19
0
0
624008
zoom
C
20
H
16
N
2
O
3
332.3526
30
22
0
0
588574
zoom
C
20
H
16
N
2
O
3
332.3526
29
15
0
0
619788
zoom
C
20
H
16
N
2
O
3
332.3526
28
17
0
0
2163683
- 0/2 defined
zoom
C
20
H
16
N
2
O
3
332.35264
28
19
0
0
2120686
zoom
C
20
H
16
N
2
O
3
332.35264
27
16
0
0
2384627
- 0/1 defined
zoom
C
20
H
16
N
2
O
3
332.35264
27
20
0
0
671973
zoom
C
20
H
16
N
2
O
3
332.3526
26
15
0
0
2229416
- 0/1 defined
zoom
C
20
H
16
N
2
O
3
332.35264
25
18
0
0
794967
zoom
C
20
H
16
N
2
O
3
332.3526
25
15
0
0
8142980
zoom
C
20
H
16
N
2
O
3
332.3526
25
23
0
0
2199956
- 0/1 defined
zoom
C
20
H
16
N
2
O
3
332.35264
24
15
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement