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 602 results
Search term:
MF = 'C_{21}H_{15}NO_{3}'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
202135
zoom
C
21
H
15
NO
3
329.3487
95
58
0
3
6428
zoom
C
21
H
15
NO
3
329.3487
91
91
0
1
4183539
zoom
C
21
H
15
NO
3
329.3487
36
20
0
0
659475
zoom
C
21
H
15
NO
3
329.3487
30
19
0
0
674508
zoom
C
21
H
15
NO
3
329.3487
28
18
0
0
4655130
zoom
C
21
H
15
NO
3
329.3487
28
18
0
0
513791
zoom
C
21
H
15
NO
3
329.3487
27
19
0
0
2127468
zoom
C
21
H
15
NO
3
329.3487
27
14
0
0
780447
zoom
C
21
H
15
NO
3
329.3487
27
18
0
0
839202
zoom
C
21
H
15
NO
3
329.3487
27
19
0
0
772551
zoom
C
21
H
15
NO
3
329.3487
26
14
0
0
1525529
zoom
C
21
H
15
NO
3
329.3487
23
15
0
0
2211197
zoom
C
21
H
15
NO
3
329.3487
23
16
0
0
2749763
- 0/1 defined
zoom
C
21
H
15
NO
3
329.3487
23
12
0
0
120173
zoom
C
21
H
15
NO
3
329.3487
23
19
0
15
669850
zoom
C
21
H
15
NO
3
329.3487
23
13
0
0
704531
zoom
C
21
H
15
NO
3
329.3487
22
14
0
0
648432
zoom
C
21
H
15
NO
3
329.3487
22
14
0
0
4523385
zoom
C
21
H
15
NO
3
329.3487
22
17
0
0
789731
zoom
C
21
H
15
NO
3
329.3487
22
14
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement