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 5986 results
Search term:
MF = 'C_{20}H_{25}N_{3}O_{5}S'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
38772373
zoom
C
20
H
25
N
3
O
5
S
419.4946
32
32
0
0
876723
zoom
C
20
H
25
N
3
O
5
S
419.4946
31
17
0
0
933347
zoom
C
20
H
25
N
3
O
5
S
419.4946
29
17
0
0
875217
zoom
C
20
H
25
N
3
O
5
S
419.4946
28
17
0
0
865480
zoom
C
20
H
25
N
3
O
5
S
419.4946
27
19
0
0
2633334
zoom
C
20
H
25
N
3
O
5
S
419.4946
26
17
0
0
927004
zoom
C
20
H
25
N
3
O
5
S
419.4946
24
14
0
0
865776
zoom
C
20
H
25
N
3
O
5
S
419.4946
23
18
0
0
870993
zoom
C
20
H
25
N
3
O
5
S
419.4946
23
15
0
0
1394786
zoom
C
20
H
25
N
3
O
5
S
419.4946
23
16
0
0
1392791
zoom
C
20
H
25
N
3
O
5
S
419.4946
22
13
0
0
3152855
zoom
C
20
H
25
N
3
O
5
S
419.4946
22
15
0
0
875169
zoom
C
20
H
25
N
3
O
5
S
419.4946
22
14
0
0
1095711
zoom
C
20
H
25
N
3
O
5
S
419.4946
22
17
0
0
1105556
zoom
C
20
H
25
N
3
O
5
S
419.4946
21
16
0
0
870991
zoom
C
20
H
25
N
3
O
5
S
419.4946
21
14
0
0
4122563
- 0/2 defined
zoom
C
20
H
25
N
3
O
5
S
419.4946
21
13
0
0
4122566
- 0/2 defined
zoom
C
20
H
25
N
3
O
5
S
419.4946
21
13
0
0
2159192
- 0/1 defined
zoom
C
20
H
25
N
3
O
5
S
419.4946
21
14
0
0
2260242
- 0/1 defined
zoom
C
20
H
25
N
3
O
5
S
419.4946
21
16
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement