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 793 results
Search term:
MF = 'C_{20}H_{17}NO_{5}S'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
901929
zoom
C
20
H
17
NO
5
S
383.4177
36
22
0
0
1770020
zoom
C
20
H
17
NO
5
S
383.4177
36
22
0
0
2748405
zoom
C
20
H
17
NO
5
S
383.41768
34
24
0
0
1655690
zoom
C
20
H
17
NO
5
S
383.4177
32
23
0
0
21476913
zoom
C
20
H
17
NO
5
S
383.4177
31
24
0
0
2067901
zoom
C
20
H
17
NO
5
S
383.41768
30
17
0
0
528180
zoom
C
20
H
17
NO
5
S
383.4177
26
18
0
0
6999455
zoom
C
20
H
17
NO
5
S
383.4177
26
23
0
0
2149934
zoom
C
20
H
17
NO
5
S
383.41768
25
13
0
0
4101270
zoom
C
20
H
17
NO
5
S
383.41768
25
17
0
0
2195619
zoom
C
20
H
17
NO
5
S
383.41768
24
16
0
0
936528
zoom
C
20
H
17
NO
5
S
383.4177
24
14
0
0
21476886
zoom
C
20
H
17
NO
5
S
383.4177
24
16
0
0
1377712
zoom
C
20
H
17
NO
5
S
383.4177
23
17
0
0
2205141
zoom
C
20
H
17
NO
5
S
383.41768
23
16
0
0
1155260
zoom
C
20
H
17
NO
5
S
383.4177
22
12
0
0
936538
zoom
C
20
H
17
NO
5
S
383.4177
22
13
0
0
936542
zoom
C
20
H
17
NO
5
S
383.4177
21
12
0
0
1488716
zoom
C
20
H
17
NO
5
S
383.4177
21
12
0
0
4088179
zoom
C
20
H
17
NO
5
S
383.41768
21
14
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement