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 8066 results
Search term:
MF = 'C_{20}H_{23}N_{3}O_{2}S'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
875023
zoom
C
20
H
23
N
3
O
2
S
369.4805
99
69
0
0
849949
zoom
C
20
H
23
N
3
O
2
S
369.4805
31
24
0
0
1061749
zoom
C
20
H
23
N
3
O
2
S
369.4805
29
20
0
0
972314
zoom
C
20
H
23
N
3
O
2
S
369.4805
27
17
0
0
848082
zoom
C
20
H
23
N
3
O
2
S
369.4805
27
18
0
0
1404432
zoom
C
20
H
23
N
3
O
2
S
369.4805
27
17
0
0
1673994
zoom
C
20
H
23
N
3
O
2
S
369.4805
27
18
0
0
1128089
zoom
C
20
H
23
N
3
O
2
S
369.4805
26
17
0
0
974550
zoom
C
20
H
23
N
3
O
2
S
369.4805
26
15
0
0
2494350
- 0/1 defined
zoom
C
20
H
23
N
3
O
2
S
369.4805
26
16
0
0
4506853
zoom
C
20
H
23
N
3
O
2
S
369.4805
26
18
0
0
1404431
zoom
C
20
H
23
N
3
O
2
S
369.4805
26
13
0
0
1404429
zoom
C
20
H
23
N
3
O
2
S
369.4805
25
15
0
0
980473
zoom
C
20
H
23
N
3
O
2
S
369.4805
25
14
0
0
1126581
zoom
C
20
H
23
N
3
O
2
S
369.4805
25
16
0
0
2488701
zoom
C
20
H
23
N
3
O
2
S
369.4805
25
17
0
0
1450863
zoom
C
20
H
23
N
3
O
2
S
369.4805
25
13
0
0
975148
zoom
C
20
H
23
N
3
O
2
S
369.4805
24
15
0
0
1079919
zoom
C
20
H
23
N
3
O
2
S
369.4805
24
18
0
0
919479
zoom
C
20
H
23
N
3
O
2
S
369.4805
24
15
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement