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 150 results
Search term:
MF = 'C_{21}H_{13}N_{3}O_{5}'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
527467
zoom
C
21
H
13
N
3
O
5
387.345
28
19
0
0
2348497
zoom
C
21
H
13
N
3
O
5
387.34502
24
13
0
0
1457149
zoom
C
21
H
13
N
3
O
5
387.345
23
16
0
0
1688208
zoom
C
21
H
13
N
3
O
5
387.345
22
14
0
0
2355974
zoom
C
21
H
13
N
3
O
5
387.34502
22
14
0
0
2200779
- 0/1 defined
zoom
C
21
H
13
N
3
O
5
387.34502
22
20
0
0
2070451
zoom
C
21
H
13
N
3
O
5
387.34502
20
14
0
0
1143479
zoom
C
21
H
13
N
3
O
5
387.345
20
14
0
0
1151608
zoom
C
21
H
13
N
3
O
5
387.345
19
13
0
0
1067170
zoom
C
21
H
13
N
3
O
5
387.345
19
11
0
0
1246189
zoom
C
21
H
13
N
3
O
5
387.345
19
12
0
0
3881540
zoom
C
21
H
13
N
3
O
5
387.345
19
12
0
0
2667243
zoom
C
21
H
13
N
3
O
5
387.34502
18
12
0
0
1745206
zoom
C
21
H
13
N
3
O
5
387.345
18
8
0
0
3761194
zoom
C
21
H
13
N
3
O
5
387.34502
18
12
0
0
11816849
- 0/1 defined
zoom
C
21
H
13
N
3
O
5
387.345
18
10
0
0
3177056
zoom
C
21
H
13
N
3
O
5
387.345
17
10
0
0
3002731
zoom
C
21
H
13
N
3
O
5
387.34502
16
10
0
0
1245217
zoom
C
21
H
13
N
3
O
5
387.345
15
10
0
0
4759172
zoom
C
21
H
13
N
3
O
5
387.345
14
12
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement