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 21931 results
Search term:
MF = 'C_{20}H_{28}N_{4}O_{2}'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
58188
- 0/4 defined
zoom
C
20
H
28
N
4
O
2
356.4619
46
69
0
0
17929232
zoom
C
20
H
28
N
4
O
2
356.4619
35
29
0
0
2147420
- 0/1 defined
zoom
C
20
H
28
N
4
O
2
356.46192
26
16
0
0
12256736
zoom
C
20
H
28
N
4
O
2
356.4619
23
15
0
0
2415916
zoom
C
20
H
28
N
4
O
2
356.4619
22
15
0
0
12023623
zoom
C
20
H
28
N
4
O
2
356.4619
20
15
0
0
7187329
zoom
C
20
H
28
N
4
O
2
356.4619
19
14
0
0
2209861
- 0/5 defined
zoom
C
20
H
28
N
4
O
2
356.46192
19
10
0
0
1120733
zoom
C
20
H
28
N
4
O
2
356.4619
19
12
0
0
21802832
zoom
C
20
H
28
N
4
O
2
356.4619
19
14
0
0
30646774
- 1/1 defined
zoom
C
20
H
28
N
4
O
2
356.4619
19
27
0
0
4070516
zoom
C
20
H
28
N
4
O
2
356.46192
18
12
0
0
6336913
zoom
C
20
H
28
N
4
O
2
356.4619
18
14
0
0
12023632
zoom
C
20
H
28
N
4
O
2
356.4619
18
13
0
0
2251875
- 0/3 defined
zoom
C
20
H
28
N
4
O
2
356.46192
18
9
0
0
21279022
- 0/1 defined
zoom
C
20
H
28
N
4
O
2
356.4619
17
13
0
0
7187408
zoom
C
20
H
28
N
4
O
2
356.4619
17
12
0
0
2240760
zoom
C
20
H
28
N
4
O
2
356.46192
17
15
0
0
1282080
zoom
C
20
H
28
N
4
O
2
356.4619
17
8
0
0
1068310
zoom
C
20
H
28
N
4
O
2
356.4619
17
11
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement