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 487 results
Search term:
MF = 'C_{21}H_{18}O_{2}'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
120459
zoom
C
21
H
18
O
2
302.3664
92
71
0
4
231118
- 0/1 defined
zoom
C
21
H
18
O
2
302.3664
32
23
0
0
530488
- 0/1 defined
zoom
C
21
H
18
O
2
302.3664
32
22
0
0
12929737
zoom
C
21
H
18
O
2
302.3664
29
22
0
0
12929738
zoom
C
21
H
18
O
2
302.3664
27
20
0
0
12929739
zoom
C
21
H
18
O
2
302.3664
27
21
0
0
12929740
zoom
C
21
H
18
O
2
302.3664
26
20
0
0
1628547
zoom
C
21
H
18
O
2
302.3664
26
18
0
0
251963
- 0/1 defined
zoom
C
21
H
18
O
2
302.3664
26
21
0
0
1029458
zoom
C
21
H
18
O
2
302.3664
26
14
0
0
1029459
zoom
C
21
H
18
O
2
302.3664
26
15
0
0
12930291
zoom
C
21
H
18
O
2
302.3664
25
20
0
0
12930292
zoom
C
21
H
18
O
2
302.3664
24
19
0
0
207436
- 0/1 defined
zoom
C
21
H
18
O
2
302.3664
24
17
0
0
4685162
zoom
C
21
H
18
O
2
302.3664
24
16
0
0
1038137
zoom
C
21
H
18
O
2
302.3664
22
13
0
0
1041416
zoom
C
21
H
18
O
2
302.3664
22
13
0
0
2541806
zoom
C
21
H
18
O
2
302.3664
22
13
0
0
2589412
zoom
C
21
H
18
O
2
302.3664
21
16
0
0
1024734
zoom
C
21
H
18
O
2
302.3664
21
13
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement