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 1065 results
Search term:
MF = 'C_{20}H_{33}N_{3}O_{4}S'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
2247808
zoom
C
20
H
33
N
3
O
4
S
411.55872
18
12
0
0
2194142
zoom
C
20
H
33
N
3
O
4
S
411.55872
16
11
0
0
2838607
zoom
C
20
H
33
N
3
O
4
S
411.55872
15
10
0
0
2195428
zoom
C
20
H
33
N
3
O
4
S
411.55872
14
10
0
0
2481778
zoom
C
20
H
33
N
3
O
4
S
411.5587
14
9
0
0
2493519
- 0/1 defined
zoom
C
20
H
33
N
3
O
4
S
411.5587
12
11
0
0
28634658
zoom
C
20
H
33
N
3
O
4
S
411.5587
12
8
0
0
11046677
- 0/1 defined
zoom
C
20
H
33
N
3
O
4
S
411.5587
11
9
0
0
28349669
zoom
C
20
H
33
N
3
O
4
S
411.5587
11
8
0
0
28352480
zoom
C
20
H
33
N
3
O
4
S
411.5587
11
8
0
0
28352537
- 0/1 defined
zoom
C
20
H
33
N
3
O
4
S
411.5587
11
8
0
0
20222003
zoom
C
20
H
33
N
3
O
4
S
411.5587
11
8
0
0
20467713
- 0/2 defined
zoom
C
20
H
33
N
3
O
4
S
411.5587
10
9
0
0
22127398
- 0/1 defined
zoom
C
20
H
33
N
3
O
4
S
411.5587
10
9
0
0
22229427
- 0/1 defined
zoom
C
20
H
33
N
3
O
4
S
411.5587
10
8
0
0
22501474
- 0/1 defined
zoom
C
20
H
33
N
3
O
4
S
411.5587
10
9
0
0
22573337
- 0/2 defined
zoom
C
20
H
33
N
3
O
4
S
411.5587
10
6
0
0
29432494
- 0/1 defined
zoom
C
20
H
33
N
3
O
4
S
411.5587
10
8
0
0
1855755
- 1/1 defined
zoom
C
20
H
33
N
3
O
4
S
411.5587
10
8
0
0
11059878
zoom
C
20
H
33
N
3
O
4
S
411.5587
9
6
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement