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 13428 results
Search term:
MF = 'C_{19}H_{21}N_{5}O_{2}'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
4682
zoom
C
19
H
21
N
5
O
2
351.4023
80
1986
0
0
3454785
zoom
C
19
H
21
N
5
O
2
351.40234
65
49
0
0
919744
zoom
C
19
H
21
N
5
O
2
351.4023
47
30
0
0
4589207
- 1/1 defined
zoom
C
19
H
21
N
5
O
2
351.4023
35
27
0
0
26457716
zoom
C
19
H
21
N
5
O
2
351.4023
34
23
0
0
919740
zoom
C
19
H
21
N
5
O
2
351.4023
33
18
0
0
923384
zoom
C
19
H
21
N
5
O
2
351.4023
27
16
0
0
923383
zoom
C
19
H
21
N
5
O
2
351.4023
26
23
0
0
2350418
- 0/1 defined
zoom
C
19
H
21
N
5
O
2
351.40234
26
18
0
0
3240985
zoom
C
19
H
21
N
5
O
2
351.4023
25
16
0
0
8491410
- 1/1 defined
zoom
C
19
H
21
N
5
O
2
351.4023
24
27
0
0
11969128
zoom
C
19
H
21
N
5
O
2
351.4023
24
19
0
0
927712
zoom
C
19
H
21
N
5
O
2
351.4023
23
14
0
0
1487677
zoom
C
19
H
21
N
5
O
2
351.4023
23
15
0
0
4153356
zoom
C
19
H
21
N
5
O
2
351.40234
23
15
0
0
4303771
zoom
C
19
H
21
N
5
O
2
351.40234
23
18
0
0
2414224
- 0/1 defined
zoom
C
19
H
21
N
5
O
2
351.4023
23
13
0
0
2422238
- 0/1 defined
zoom
C
19
H
21
N
5
O
2
351.4023
23
22
0
0
2422249
- 0/1 defined
zoom
C
19
H
21
N
5
O
2
351.4023
23
23
0
0
2886526
zoom
C
19
H
21
N
5
O
2
351.40234
23
14
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement