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 1194 results
Search term:
MF = 'C_{21}H_{17}NO_{5}'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
2044295
zoom
C
21
H
17
NO
5
363.36338
65
46
0
0
129864
zoom
C
21
H
17
NO
5
363.3634
35
33
0
0
60574
zoom
C
21
H
17
NO
5
363.3634
33
28
0
0
482899
zoom
C
21
H
17
NO
5
363.3634
33
23
0
0
88090
zoom
C
21
H
17
NO
5
363.3634
28
19
0
0
2213233
- 0/1 defined
zoom
C
21
H
17
NO
5
363.36338
27
20
0
0
1269958
zoom
C
21
H
17
NO
5
363.3634
25
14
0
0
223831
zoom
C
21
H
17
NO
5
363.3634
25
17
0
0
4614807
zoom
C
21
H
17
NO
5
363.3634
24
16
0
0
2163257
zoom
C
21
H
17
NO
5
363.36338
23
16
0
0
1215587
zoom
C
21
H
17
NO
5
363.3634
23
22
0
0
2269749
- 0/1 defined
zoom
C
21
H
17
NO
5
363.36338
22
14
0
0
2764964
- 0/1 defined
zoom
C
21
H
17
NO
5
363.36338
22
16
0
0
389488
zoom
C
21
H
17
NO
5
363.3634
22
23
0
0
1008272
zoom
C
21
H
17
NO
5
363.3634
22
15
0
0
1060441
zoom
C
21
H
17
NO
5
363.3634
21
14
0
0
1155965
zoom
C
21
H
17
NO
5
363.3634
21
12
0
0
5627414
zoom
C
21
H
17
NO
5
363.3634
21
13
0
0
2034324
zoom
C
21
H
17
NO
5
363.36338
21
16
0
0
2034325
zoom
C
21
H
17
NO
5
363.36338
20
13
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement