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 9289 results
Search term:
MF = 'C_{21}H_{23}N_{5}O_{2}'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
4979196
zoom
C
21
H
23
N
5
O
2
377.4396
27
29
0
0
11969462
zoom
C
21
H
23
N
5
O
2
377.4396
25
18
0
0
11969688
zoom
C
21
H
23
N
5
O
2
377.4396
25
18
0
0
11969053
zoom
C
21
H
23
N
5
O
2
377.4396
24
17
0
0
921477
zoom
C
21
H
23
N
5
O
2
377.4396
23
12
0
0
2094156
zoom
C
21
H
23
N
5
O
2
377.43962
22
13
0
0
2414176
zoom
C
21
H
23
N
5
O
2
377.4396
21
11
0
0
922182
zoom
C
21
H
23
N
5
O
2
377.4396
21
16
0
0
4044890
zoom
C
21
H
23
N
5
O
2
377.43962
21
13
0
0
4074120
zoom
C
21
H
23
N
5
O
2
377.43962
21
13
0
0
4075230
zoom
C
21
H
23
N
5
O
2
377.43962
21
13
0
0
4975511
zoom
C
21
H
23
N
5
O
2
377.4396
20
14
0
0
3138332
- 0/1 defined
zoom
C
21
H
23
N
5
O
2
377.4396
20
13
0
0
11969700
zoom
C
21
H
23
N
5
O
2
377.4396
20
17
0
0
5259614
zoom
C
21
H
23
N
5
O
2
377.4396
20
12
0
0
5261201
zoom
C
21
H
23
N
5
O
2
377.4396
20
11
0
0
7441074
zoom
C
21
H
23
N
5
O
2
377.4396
20
12
0
0
4985247
zoom
C
21
H
23
N
5
O
2
377.4396
19
11
0
0
4985259
zoom
C
21
H
23
N
5
O
2
377.4396
19
10
0
0
90800
zoom
C
21
H
23
N
5
O
2
377.4396
19
21
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement