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 1194 results
Search term:
MF = 'C_{21}H_{18}BrN_{3}O_{2}'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
11077011
- 0/1 defined
zoom
C
21
H
18
BrN
3
O
2
424.2905
24
15
0
0
861354
zoom
C
21
H
18
BrN
3
O
2
424.2905
22
14
0
0
4503028
zoom
C
21
H
18
BrN
3
O
2
424.2905
21
15
0
0
11866389
zoom
C
21
H
18
BrN
3
O
2
424.2905
20
12
0
0
1439467
zoom
C
21
H
18
BrN
3
O
2
424.2905
20
13
0
0
861279
zoom
C
21
H
18
BrN
3
O
2
424.2905
20
13
0
0
3807105
zoom
C
21
H
18
BrN
3
O
2
424.29052
20
13
0
0
912433
zoom
C
21
H
18
BrN
3
O
2
424.2905
19
11
0
0
1512228
zoom
C
21
H
18
BrN
3
O
2
424.2905
18
12
0
0
12216328
- 0/1 defined
zoom
C
21
H
18
BrN
3
O
2
424.2905
17
12
0
0
12216337
- 0/1 defined
zoom
C
21
H
18
BrN
3
O
2
424.2905
17
13
0
0
12932728
zoom
C
21
H
18
BrN
3
O
2
424.2905
16
12
0
0
27326794
zoom
C
21
H
18
BrN
3
O
2
424.2905
16
11
0
0
4614559
zoom
C
21
H
18
BrN
3
O
2
424.2905
16
10
0
0
7931121
zoom
C
21
H
18
BrN
3
O
2
424.2905
16
14
0
0
7873381
zoom
C
21
H
18
BrN
3
O
2
424.2905
15
11
0
0
1078319
zoom
C
21
H
18
BrN
3
O
2
424.2905
15
11
0
0
1399620
zoom
C
21
H
18
BrN
3
O
2
424.2905
15
10
0
0
3712428
- 0/1 defined
zoom
C
21
H
18
BrN
3
O
2
424.29052
14
11
0
0
7874417
zoom
C
21
H
18
BrN
3
O
2
424.2905
14
13
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement