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 739 results
Search term:
MF = 'C_{20}H_{14}N_{4}O_{2}'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
666978
zoom
C
20
H
14
N
4
O
2
342.3508
33
22
0
0
10558607
zoom
C
20
H
14
N
4
O
2
342.3508
32
20
0
0
697953
zoom
C
20
H
14
N
4
O
2
342.3508
25
17
0
23
65382
zoom
C
20
H
14
N
4
O
2
342.3508
24
26
0
0
633458
zoom
C
20
H
14
N
4
O
2
342.3508
24
14
0
0
638539
zoom
C
20
H
14
N
4
O
2
342.3508
24
14
0
0
1632572
zoom
C
20
H
14
N
4
O
2
342.3508
23
16
0
0
7829729
zoom
C
20
H
14
N
4
O
2
342.3508
23
16
0
0
7839534
zoom
C
20
H
14
N
4
O
2
342.3508
22
19
0
0
4054687
zoom
C
20
H
14
N
4
O
2
342.35076
22
15
0
0
1240571
zoom
C
20
H
14
N
4
O
2
342.3508
22
18
0
0
1376315
zoom
C
20
H
14
N
4
O
2
342.3508
22
10
0
0
620163
zoom
C
20
H
14
N
4
O
2
342.3508
22
11
0
0
633459
zoom
C
20
H
14
N
4
O
2
342.3508
22
12
0
0
573729
zoom
C
20
H
14
N
4
O
2
342.3508
21
13
0
0
663471
zoom
C
20
H
14
N
4
O
2
342.3508
21
14
0
0
658948
zoom
C
20
H
14
N
4
O
2
342.3508
20
15
0
0
609879
zoom
C
20
H
14
N
4
O
2
342.3508
20
17
0
0
1432264
zoom
C
20
H
14
N
4
O
2
342.3508
20
12
0
0
765511
zoom
C
20
H
14
N
4
O
2
342.3508
20
12
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement