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 1624 results
Search term:
MF = 'C_{21}H_{25}N_{5}'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
649922
zoom
C
21
H
25
N
5
347.4567
32
19
0
0
725071
zoom
C
21
H
25
N
5
347.4567
26
15
0
0
810610
zoom
C
21
H
25
N
5
347.4567
26
14
0
0
661266
zoom
C
21
H
25
N
5
347.4567
25
13
0
0
612876
zoom
C
21
H
25
N
5
347.4567
23
14
0
0
2409149
zoom
C
21
H
25
N
5
347.4567
23
13
0
0
825585
zoom
C
21
H
25
N
5
347.4567
22
13
0
0
818829
zoom
C
21
H
25
N
5
347.4567
21
12
0
0
2708154
zoom
C
21
H
25
N
5
347.4567
21
14
0
0
2369151
zoom
C
21
H
25
N
5
347.4567
20
14
0
0
1485251
zoom
C
21
H
25
N
5
347.4567
20
13
0
0
4086272
zoom
C
21
H
25
N
5
347.4567
19
13
0
0
4102589
zoom
C
21
H
25
N
5
347.4567
18
14
0
0
13162591
zoom
C
21
H
25
N
5
347.4567
18
12
0
0
5259542
zoom
C
21
H
25
N
5
347.4567
17
14
0
0
3546731
zoom
C
21
H
25
N
5
347.4567
17
10
0
0
2107377
zoom
C
21
H
25
N
5
347.4567
17
12
0
0
3633879
zoom
C
21
H
25
N
5
347.4567
16
11
0
0
565284
- 0/1 defined
zoom
C
21
H
25
N
5
347.4567
15
9
0
0
4358136
zoom
C
21
H
25
N
5
347.4567
14
8
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement